diff --git a/db/knex_migrations/2023-11-10-slow-response-visual-improvements.js b/db/knex_migrations/2023-11-10-slow-response-visual-improvements.js
new file mode 100644
index 000000000..d85e1cfd9
--- /dev/null
+++ b/db/knex_migrations/2023-11-10-slow-response-visual-improvements.js
@@ -0,0 +1,21 @@
+exports.up = function (knex) {
+    // add various slow response parameters
+    return knex.schema
+        .alterTable("heartbeat", function (table) {
+            table.integer("ping_status").nullable().defaultTo(null);
+            table.integer("ping_threshold").nullable().defaultTo(null);
+            table.boolean("ping_important").notNullable().defaultTo(0);
+            table.string("ping_msg").nullable().defaultTo(null);
+        });
+};
+
+exports.down = function (knex) {
+    // remove various slow response parameters
+    return knex.schema
+        .alterTable("heartbeat", function (table) {
+            table.dropColumn("ping_status");
+            table.dropColumn("ping_threshold");
+            table.dropColumn("ping_important");
+            table.dropColumn("ping_msg");
+        });
+};
diff --git a/package-lock.json b/package-lock.json
index e82b8ebfb..a539370c8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -97,6 +97,7 @@
                 "bootstrap": "5.1.3",
                 "chart.js": "~4.2.1",
                 "chartjs-adapter-dayjs-4": "~1.0.4",
+                "chartjs-plugin-annotation": "~3.0.1",
                 "concurrently": "^7.1.0",
                 "core-js": "~3.26.1",
                 "cronstrue": "~2.24.0",
@@ -6062,6 +6063,15 @@
                 "dayjs": "^1.9.7"
             }
         },
+        "node_modules/chartjs-plugin-annotation": {
+            "version": "3.0.1",
+            "resolved": "https://registry.npmjs.org/chartjs-plugin-annotation/-/chartjs-plugin-annotation-3.0.1.tgz",
+            "integrity": "sha512-hlIrXXKqSDgb+ZjVYHefmlZUXK8KbkCPiynSVrTb/HjTMkT62cOInaT1NTQCKtxKKOm9oHp958DY3RTAFKtkHg==",
+            "dev": true,
+            "peerDependencies": {
+                "chart.js": ">=4.0.0"
+            }
+        },
         "node_modules/check-more-types": {
             "version": "2.24.0",
             "resolved": "https://registry.npmjs.org/check-more-types/-/check-more-types-2.24.0.tgz",
diff --git a/package.json b/package.json
index b73b015fb..cb20cd307 100644
--- a/package.json
+++ b/package.json
@@ -163,6 +163,7 @@
         "bootstrap": "5.1.3",
         "chart.js": "~4.2.1",
         "chartjs-adapter-dayjs-4": "~1.0.4",
+        "chartjs-plugin-annotation": "~3.0.1",
         "concurrently": "^7.1.0",
         "core-js": "~3.26.1",
         "cronstrue": "~2.24.0",
diff --git a/server/client.js b/server/client.js
index 260e77a73..cfa208dcc 100644
--- a/server/client.js
+++ b/server/client.js
@@ -54,7 +54,7 @@ async function sendHeartbeatList(socket, monitorID, toUser = false, overwrite =
         monitorID,
     ]);
 
-    let result = list.reverse();
+    let result = R.convertToBeans("heartbeat", list.reverse());
 
     if (toUser) {
         io.to(socket.userID).emit("heartbeatList", monitorID, result, overwrite);
diff --git a/server/model/heartbeat.js b/server/model/heartbeat.js
index 9e972a376..648921203 100644
--- a/server/model/heartbeat.js
+++ b/server/model/heartbeat.js
@@ -6,6 +6,9 @@ const { BeanModel } = require("redbean-node/dist/bean-model");
  *      1 = UP
  *      2 = PENDING
  *      3 = MAINTENANCE
+ * pingStatus:
+ *      4 = SLOW
+ *      5 = NOMINAL
  */
 class Heartbeat extends BeanModel {
 
@@ -37,6 +40,10 @@ class Heartbeat extends BeanModel {
             important: this._important,
             duration: this._duration,
             retries: this._retries,
+            pingThreshold: this._pingThreshold,
+            pingStatus: this._pingStatus,
+            pingImportant: this._pingImportant,
+            pingMsg: this._pingMsg,
         };
     }
 
diff --git a/server/model/monitor.js b/server/model/monitor.js
index 87a6f2753..52f5ba659 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -1,8 +1,7 @@
 const dayjs = require("dayjs");
 const axios = require("axios");
 const { Prometheus } = require("../prometheus");
-const { log, UP, DOWN, PENDING, MAINTENANCE, flipStatus, MAX_INTERVAL_SECOND, MIN_INTERVAL_SECOND,
-    SQL_DATETIME_FORMAT
+const { log, UP, DOWN, PENDING, MAINTENANCE, NOMINAL, SLOW, flipStatus, MAX_INTERVAL_SECOND, MIN_INTERVAL_SECOND, SQL_DATETIME_FORMAT
 } = require("../../src/util");
 const { tcping, ping, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, mssqlQuery, postgresQuery, mysqlQuery, setSetting, httpNtlm, radius, grpcQuery,
     redisPingAsync, mongodbPing, kafkaProducerAsync, getOidcTokenClientCredentials, rootCertificatesFingerprints, axiosAbortSignal
@@ -34,6 +33,9 @@ const rootCertificates = rootCertificatesFingerprints();
  *      1 = UP
  *      2 = PENDING
  *      3 = MAINTENANCE
+ *  pingStatus:
+ *      4 = SLOW
+ *      5 = NOMINAL
  */
 class Monitor extends BeanModel {
 
@@ -1565,7 +1567,7 @@ class Monitor extends BeanModel {
         // Create stats to append to messages/logs
         const methodDescription = [ "average", "max" ].includes(method) ? `${method} of last ${windowDuration}s` : method;
         let msgStats = `Response: ${actualResponseTime}ms (${methodDescription}) | Threshold: ${threshold}ms (${thresholdDescription})`;
-        // Add window duration for methods that make sense
+        let pingMsg = `${actualResponseTime}ms resp. (${methodDescription})`;
 
         // Verify valid response time was calculated
         if (actualResponseTime === 0 || !Number.isInteger(actualResponseTime)) {
@@ -1579,8 +1581,11 @@ class Monitor extends BeanModel {
             return;
         }
 
+        bean.pingThreshold = threshold;
+
         // Responding normally
         if (actualResponseTime < threshold) {
+            bean.pingStatus = NOMINAL;
             if (bean.slowResponseCount === 0) {
                 log.debug("monitor", `[${this.name}] Responding normally. No need to send slow response notification | ${msgStats}`);
             } else {
@@ -1588,6 +1593,11 @@ class Monitor extends BeanModel {
                 log.debug("monitor", `[${this.name}] Returned to normal response time | ${msgStats}`);
                 let msg = `[${this.name}] Returned to Normal Response Time \n${msgStats}`;
                 Monitor.sendSlowResponseNotification(monitor, bean, msg);
+
+                // Mark important (SLOW -> NOMINAL)
+                pingMsg += ` < ${threshold}ms`;
+                bean.pingImportant = true;
+                bean.pingMsg = pingMsg;
             }
 
             // Reset slow response count
@@ -1595,6 +1605,7 @@ class Monitor extends BeanModel {
 
         // Responding slowly
         } else {
+            bean.pingStatus = SLOW;
             ++bean.slowResponseCount;
 
             // Always send first notification
@@ -1602,6 +1613,12 @@ class Monitor extends BeanModel {
                 log.debug("monitor", `[${this.name}] Responded slowly, sending notification | ${msgStats}`);
                 let msg = `[${this.name}] Responded Slowly \n${msgStats}`;
                 Monitor.sendSlowResponseNotification(monitor, bean, msg);
+
+                // Mark important (NOMINAL -> SLOW)
+                pingMsg += ` > ${threshold}ms`;
+                bean.pingImportant = true;
+                bean.pingMsg = pingMsg;
+
             // Send notification every x times
             } else if (this.slowResponseNotificationResendInterval > 0) {
                 if (((bean.slowResponseCount) % this.slowResponseNotificationResendInterval) === 0) {
diff --git a/server/server.js b/server/server.js
index 7ae3b6249..9a20773be 100644
--- a/server/server.js
+++ b/server/server.js
@@ -1199,9 +1199,9 @@ let needSetup = false;
 
                 let count;
                 if (monitorID == null) {
-                    count = await R.count("heartbeat", "important = 1");
+                    count = await R.count("heartbeat", "important = 1 OR ping_important = 1");
                 } else {
-                    count = await R.count("heartbeat", "monitor_id = ? AND important = 1", [
+                    count = await R.count("heartbeat", "monitor_id = ? AND (important = 1 OR ping_important = 1)", [
                         monitorID,
                     ]);
                 }
@@ -1225,7 +1225,7 @@ let needSetup = false;
                 let list;
                 if (monitorID == null) {
                     list = await R.find("heartbeat", `
-                        important = 1
+                        important = 1 OR ping_important = 1
                         ORDER BY time DESC
                         LIMIT ?
                         OFFSET ?
@@ -1236,7 +1236,7 @@ let needSetup = false;
                 } else {
                     list = await R.find("heartbeat", `
                         monitor_id = ?
-                        AND important = 1
+                        AND (important = 1 OR ping_important = 1)
                         ORDER BY time DESC
                         LIMIT ?
                         OFFSET ?
@@ -1449,7 +1449,9 @@ let needSetup = false;
 
                 log.info("manage", `Clear Events Monitor: ${monitorID} User ID: ${socket.userID}`);
 
-                await R.exec("UPDATE heartbeat SET msg = ?, important = ? WHERE monitor_id = ? ", [
+                await R.exec("UPDATE heartbeat SET msg = ?, important = ?, ping_msg = ?, ping_important = ? WHERE monitor_id = ? ", [
+                    "",
+                    "0",
                     "",
                     "0",
                     monitorID,
diff --git a/src/components/PingChart.vue b/src/components/PingChart.vue
index c550b4b4f..dd9db4e3f 100644
--- a/src/components/PingChart.vue
+++ b/src/components/PingChart.vue
@@ -19,11 +19,12 @@
 <script lang="js">
 import { BarController, BarElement, Chart, Filler, LinearScale, LineController, LineElement, PointElement, TimeScale, Tooltip } from "chart.js";
 import "chartjs-adapter-dayjs-4";
+import annotationPlugin from "chartjs-plugin-annotation";
 import dayjs from "dayjs";
 import { Line } from "vue-chartjs";
 import { DOWN, PENDING, MAINTENANCE, log } from "../util.ts";
 
-Chart.register(LineController, BarController, LineElement, PointElement, TimeScale, BarElement, LinearScale, Tooltip, Filler);
+Chart.register(LineController, BarController, LineElement, PointElement, TimeScale, BarElement, LinearScale, Tooltip, Filler, annotationPlugin);
 
 export default {
     components: { Line },
@@ -56,6 +57,19 @@ export default {
         };
     },
     computed: {
+        threshold() {
+            let heartbeatList = this.heartbeatList ||
+             (this.monitorId in this.$root.heartbeatList && this.$root.heartbeatList[this.monitorId]) ||
+             [];
+
+            let lastBeat = heartbeatList.at(-1);
+
+            if (lastBeat) {
+                return lastBeat.pingThreshold;
+            } else {
+                return undefined;
+            }
+        },
         chartOptions() {
             return {
                 responsive: true,
@@ -153,6 +167,22 @@ export default {
                     legend: {
                         display: false,
                     },
+                    annotation: {
+                        annotations: {
+                            line1: {
+                                type: "line",
+                                mode: "horizontal",
+                                scaleID: "y",
+                                value: this.threshold,
+                                endValue: this.threshold,
+                                borderColor: "rgba(248,163,6,1.0)",
+                                borderWith: 2,
+                                borderDash: [ 1, 3 ],
+                                adjustScaleRange: false,
+                                display: this.threshold !== undefined,
+                            }
+                        }
+                    },
                 },
             };
         },
diff --git a/src/components/Status.vue b/src/components/Status.vue
index 92ed8a6b0..0a4960007 100644
--- a/src/components/Status.vue
+++ b/src/components/Status.vue
@@ -30,6 +30,14 @@ export default {
                 return "maintenance";
             }
 
+            if (this.status === 4) {
+                return "warning";
+            }
+
+            if (this.status === 5) {
+                return "primary";
+            }
+
             return "secondary";
         },
 
@@ -50,6 +58,14 @@ export default {
                 return this.$t("statusMaintenance");
             }
 
+            if (this.status === 4) {
+                return this.$t("Slow");
+            }
+
+            if (this.status === 5) {
+                return this.$t("Nominal");
+            }
+
             return this.$t("Unknown");
         },
     },
diff --git a/src/lang/en.json b/src/lang/en.json
index c6e5fca29..f07ed86f5 100644
--- a/src/lang/en.json
+++ b/src/lang/en.json
@@ -28,6 +28,8 @@
     "Pending": "Pending",
     "statusMaintenance": "Maintenance",
     "Maintenance": "Maintenance",
+    "Slow": "Slow",
+    "Nominal": "Nominal",
     "Unknown": "Unknown",
     "Cannot connect to the socket server": "Cannot connect to the socket server",
     "Reconnecting...": "Reconnecting...",
diff --git a/src/mixins/socket.js b/src/mixins/socket.js
index 0a8001a4d..79cba54c1 100644
--- a/src/mixins/socket.js
+++ b/src/mixins/socket.js
@@ -5,7 +5,7 @@ import Favico from "favico.js";
 import dayjs from "dayjs";
 import mitt from "mitt";
 
-import { DOWN, MAINTENANCE, PENDING, UP } from "../util.ts";
+import { DOWN, MAINTENANCE, PENDING, UP, SLOW, NOMINAL } from "../util.ts";
 import { getDevContainerServerHostname, isDevContainer, getToastSuccessTimeout, getToastErrorTimeout } from "../util-frontend.js";
 const toast = useToast();
 
@@ -190,6 +190,10 @@ export default {
                 }
 
                 // Add to important list if it is important
+                if (data.important || data.pingImportant) {
+                    this.emitter.emit("newImportantHeartbeat", data);
+                }
+
                 // Also toast
                 if (data.important) {
 
@@ -206,8 +210,23 @@ export default {
                             toast(`[${this.monitorList[data.monitorID].name}] ${data.msg}`);
                         }
                     }
+                }
 
-                    this.emitter.emit("newImportantHeartbeat", data);
+                if (data.pingImportant) {
+
+                    if (this.monitorList[data.monitorID] !== undefined) {
+                        if (data.pingStatus === SLOW) {
+                            toast.warning(`[${this.monitorList[data.monitorID].name}] [SLOW] ${data.pingMsg}`, {
+                                timeout: getToastErrorTimeout(),
+                            });
+                        } else if (data.pingStatus === NOMINAL) {
+                            toast.success(`[${this.monitorList[data.monitorID].name}] [NOMINAL] ${data.pingMsg}`, {
+                                timeout: getToastSuccessTimeout(),
+                            });
+                        } else {
+                            toast(`[${this.monitorList[data.monitorID].name}] ${data.pingMsg}`);
+                        }
+                    }
                 }
             });
 
@@ -745,11 +764,30 @@ export default {
             return result;
         },
 
+        pingStatusList() {
+            let result = {};
+
+            for (let monitorID in this.lastHeartbeatList) {
+                let lastHeartBeat = this.lastHeartbeatList[monitorID];
+
+                if (lastHeartBeat?.status === UP) {
+                    if (lastHeartBeat.pingStatus === SLOW) {
+                        result[monitorID] = {
+                            text: this.$t("Slow"),
+                            color: "warning",
+                        };
+                    }
+                }
+            }
+            return result;
+        },
+
         stats() {
             let result = {
                 active: 0,
                 up: 0,
                 down: 0,
+                slow: 0,
                 maintenance: 0,
                 pending: 0,
                 unknown: 0,
@@ -775,6 +813,10 @@ export default {
                     } else {
                         result.unknown++;
                     }
+
+                    if (beat.pingStatus === SLOW) {
+                        result.slow++;
+                    }
                 } else {
                     result.unknown++;
                 }
diff --git a/src/pages/DashboardHome.vue b/src/pages/DashboardHome.vue
index 3baf35a62..274ace105 100644
--- a/src/pages/DashboardHome.vue
+++ b/src/pages/DashboardHome.vue
@@ -15,6 +15,10 @@
                         <h3>{{ $t("Down") }}</h3>
                         <span class="num text-danger">{{ $root.stats.down }}</span>
                     </div>
+                    <div class="col">
+                        <h3>{{ $t("Slow") }}</h3>
+                        <span class="num text-warning">{{ $root.stats.slow }}</span>
+                    </div>
                     <div class="col">
                         <h3>{{ $t("Maintenance") }}</h3>
                         <span class="num text-maintenance">{{ $root.stats.maintenance }}</span>
@@ -43,11 +47,16 @@
                     <tbody>
                         <tr v-for="(beat, index) in displayedRecords" :key="index" :class="{ 'shadow-box': $root.windowWidth <= 550}">
                             <td><router-link :to="`/dashboard/${beat.monitorID}`">{{ $root.monitorList[beat.monitorID]?.name }}</router-link></td>
-                            <td><Status :status="beat.status" /></td>
+                            <td>
+                                <div v-if="beat.important"><Status :status="beat.status" /></div>
+                                <div v-if="beat.pingImportant"><Status :status="beat.pingStatus" /></div>
+                            </td>
                             <td :class="{ 'border-0':! beat.msg}"><Datetime :value="beat.time" /></td>
-                            <td class="border-0">{{ beat.msg }}</td>
+                            <td class="border-0">
+                                <div v-if="beat.important">{{ beat.msg }}</div>
+                                <div v-if="beat.pingImportant">{{ beat.pingMsg }}</div>
+                            </td>
                         </tr>
-
                         <tr v-if="importantHeartBeatListLength === 0">
                             <td colspan="4">
                                 {{ $t("No important events") }}
diff --git a/src/pages/Details.vue b/src/pages/Details.vue
index f1692027c..17e6399b2 100644
--- a/src/pages/Details.vue
+++ b/src/pages/Details.vue
@@ -71,7 +71,8 @@
                         <span class="word">{{ $t("checkEverySecond", [ monitor.interval ]) }}</span>
                     </div>
                     <div class="col-md-4 text-center">
-                        <span class="badge rounded-pill" :class=" 'bg-' + status.color " style="font-size: 30px;">{{ status.text }}</span>
+                        <span class="badge rounded-pill m-1" :class=" 'bg-' + status.color " style="font-size: 30px;">{{ status.text }}</span>
+                        <span v-if="pingStatus" class="badge rounded-pill m-1" :class=" 'bg-' + pingStatus.color " style="font-size: 30px;">{{ pingStatus.text }}</span>
                     </div>
                 </div>
             </div>
@@ -219,9 +220,15 @@
                     </thead>
                     <tbody>
                         <tr v-for="(beat, index) in displayedRecords" :key="index" style="padding: 10px;">
-                            <td><Status :status="beat.status" /></td>
+                            <td>
+                                <div v-if="beat.important"><Status :status="beat.status" /></div>
+                                <div v-if="beat.pingImportant"><Status :status="beat.pingStatus" /></div>
+                            </td>
                             <td :class="{ 'border-0':! beat.msg}"><Datetime :value="beat.time" /></td>
-                            <td class="border-0">{{ beat.msg }}</td>
+                            <td class="border-0">
+                                <div v-if="beat.important">{{ beat.msg }}</div>
+                                <div v-if="beat.pingImportant">{{ beat.pingMsg }}</div>
+                            </td>
                         </tr>
 
                         <tr v-if="importantHeartBeatListLength === 0">
@@ -366,6 +373,14 @@ export default {
             return { };
         },
 
+        pingStatus() {
+            if (this.$root.pingStatusList[this.monitor.id]) {
+                return this.$root.pingStatusList[this.monitor.id];
+            }
+
+            return { };
+        },
+
         tlsInfo() {
             // Add: this.$root.tlsInfoList[this.monitor.id].certInfo
             // Fix: TypeError: Cannot read properties of undefined (reading 'validTo')
diff --git a/src/util.js b/src/util.js
index b3706ddbf..b699932f9 100644
--- a/src/util.js
+++ b/src/util.js
@@ -20,6 +20,8 @@ exports.DOWN = 0;
 exports.UP = 1;
 exports.PENDING = 2;
 exports.MAINTENANCE = 3;
+exports.SLOW = 4;
+exports.NOMINAL = 5;
 exports.STATUS_PAGE_ALL_DOWN = 0;
 exports.STATUS_PAGE_ALL_UP = 1;
 exports.STATUS_PAGE_PARTIAL_DOWN = 2;
diff --git a/src/util.ts b/src/util.ts
index b4a52f508..5ae2192cf 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -24,6 +24,8 @@ export const DOWN = 0;
 export const UP = 1;
 export const PENDING = 2;
 export const MAINTENANCE = 3;
+export const SLOW = 4;
+export const NOMINAL = 5;
 
 export const STATUS_PAGE_ALL_DOWN = 0;
 export const STATUS_PAGE_ALL_UP = 1;