diff --git a/src/plugin/piniaActionTrail.js b/src/plugin/piniaActionTrail.js
new file mode 100644
index 00000000..6b0bc6fa
--- /dev/null
+++ b/src/plugin/piniaActionTrail.js
@@ -0,0 +1,141 @@
+const STORAGE_KEY = 'vrcx:sentry:piniaActions';
+
+function getStorage() {
+    try {
+        return localStorage;
+    } catch {
+        return null;
+    }
+}
+
+function safeJsonParse(value) {
+    if (!value) return null;
+    try {
+        return JSON.parse(value);
+    } catch {
+        return null;
+    }
+}
+
+function safeJsonStringify(value, fallback = '[]') {
+    try {
+        return JSON.stringify(value);
+    } catch {
+        return fallback;
+    }
+}
+
+export function getPiniaActionTrail() {
+    const storage = getStorage();
+    if (!storage) return [];
+
+    const data = safeJsonParse(storage.getItem(STORAGE_KEY));
+    return Array.isArray(data) ? data : [];
+}
+
+export function clearPiniaActionTrail() {
+    const storage = getStorage();
+    if (!storage) return;
+    storage.removeItem(STORAGE_KEY);
+}
+
+export function appendPiniaActionTrail(entry, maxEntries = 200) {
+    const storage = getStorage();
+    if (!storage) return;
+
+    const existing = getPiniaActionTrail();
+    existing.push(entry);
+
+    if (existing.length > maxEntries) {
+        existing.splice(0, existing.length - maxEntries);
+    }
+
+    try {
+        storage.setItem(STORAGE_KEY, safeJsonStringify(existing));
+    } catch {
+        // ignore
+    }
+}
+
+export function createPiniaActionTrailPlugin({ maxEntries = 200 } = {}) {
+    if (typeof window !== 'undefined') {
+        // @ts-ignore
+        if (!window.__VRCX_PINIA_ACTION_TRAIL__) {
+            // @ts-ignore
+            window.__VRCX_PINIA_ACTION_TRAIL__ = true;
+
+            window.addEventListener('beforeunload', () => {
+                clearPiniaActionTrail();
+            });
+        }
+    }
+
+    return ({ store }) => {
+        store.$onAction(({ name }) => {
+            appendPiniaActionTrail(
+                {
+                    ts: Date.now(),
+                    storeId: store.$id,
+                    action: name
+                },
+                maxEntries
+            );
+        });
+    };
+}
+
+function readPerformanceMemory() {
+    // @ts-ignore
+    const memory = window?.performance?.memory;
+    if (!memory) return null;
+    const { usedJSHeapSize, jsHeapSizeLimit } = memory;
+    if (
+        typeof usedJSHeapSize !== 'number' ||
+        typeof jsHeapSizeLimit !== 'number'
+    ) {
+        return null;
+    }
+    return { usedJSHeapSize, jsHeapSizeLimit };
+}
+
+export function startRendererMemoryThresholdReport(
+    Sentry,
+    { intervalMs = 10_000, thresholdRatio = 0.8, cooldownMs = 5 * 60_000 } = {}
+) {
+    const initial = readPerformanceMemory();
+    if (!initial) return null;
+
+    if (!Sentry?.withScope) return null;
+
+    let lastSent = 0;
+
+    return setInterval(() => {
+        const m = readPerformanceMemory();
+        if (!m) return;
+
+        const ratio = m.usedJSHeapSize / m.jsHeapSizeLimit;
+        if (!Number.isFinite(ratio) || ratio < thresholdRatio) return;
+
+        const now = Date.now();
+        if (now - lastSent < cooldownMs) return;
+        lastSent = now;
+
+        const trail = getPiniaActionTrail();
+        Sentry.withScope((scope) => {
+            scope.setLevel('warning');
+            scope.setTag('reason', 'high-js-heap');
+            scope.setContext('memory', {
+                usedMB: m.usedJSHeapSize / 1024 / 1024,
+                limitMB: m.jsHeapSizeLimit / 1024 / 1024,
+                ratio
+            });
+            scope.setContext('pinia_actions', {
+                trail,
+                count: trail.length
+            });
+            Sentry.captureMessage(
+                'Memory usage critical: nearing JS heap limit'
+            );
+        });
+    }, intervalMs);
+}
diff --git a/src/plugin/sentry.js b/src/plugin/sentry.js
index b9957955..7205097c 100644
--- a/src/plugin/sentry.js
+++ b/src/plugin/sentry.js
@@ -1,4 +1,5 @@
 import { router } from './router';
+import { startRendererMemoryThresholdReport } from './piniaActionTrail';
 
 import configRepository from '../service/config';
 
@@ -81,22 +82,7 @@ export async function initSentry(app) {
                 }
                 return event;
             },
-            beforeSendSpan(span) {
-                span.data = {
-                    ...span.data,
-                    usedJSHeapSize:
-                        // @ts-ignore
-                        window.performance.memory.usedJSHeapSize / 1024 / 1024,
-                    totalJSHeapSize:
-                        // @ts-ignore
-                        window.performance.memory.totalJSHeapSize / 1024 / 1024,
-                    jsHeapSizeLimit:
-                        // @ts-ignore
-                        window.performance.memory.jsHeapSizeLimit / 1024 / 1024,
-                    vrcxId: vrcxId
-                };
-                return span;
-            },
+
             integrations: [
                 Sentry.replayIntegration({
                     maskAllText: true,
@@ -119,6 +105,12 @@ export async function initSentry(app) {
             ]
         });
         console.log('Sentry initialized');
+
+        startRendererMemoryThresholdReport(Sentry, {
+            thresholdRatio: 0.8,
+            intervalMs: 10_000,
+            cooldownMs: 5 * 60_000
+        });
     } catch (e) {
         console.error('Failed to initialize Sentry:', e);
         return;
diff --git a/src/stores/index.js b/src/stores/index.js
index 792873c2..fc0e85e6 100644
--- a/src/stores/index.js
+++ b/src/stores/index.js
@@ -1,6 +1,7 @@
 import { createPinia } from 'pinia';
 
 import { getSentry, isSentryOptedIn } from '../plugin';
+import { createPiniaActionTrailPlugin } from '../plugin/piniaActionTrail';
 import { useAdvancedSettingsStore } from './settings/advanced';
 import { useAppearanceSettingsStore } from './settings/appearance';
 import { useAuthStore } from './auth';
@@ -38,11 +39,17 @@ import { useWristOverlaySettingsStore } from './settings/wristOverlay';
 
 export const pinia = createPinia();
 
+function registerPiniaActionTrailPlugin() {
+    if (!NIGHTLY) return;
+    pinia.use(createPiniaActionTrailPlugin({ maxEntries: 200 }));
+}
+
 async function registerSentryPiniaPlugin() {
     if (!NIGHTLY) return;
     if (!(await isSentryOptedIn())) return;
 
     const Sentry = await getSentry();
+
     pinia.use(
         Sentry.createSentryPiniaPlugin({
             stateTransformer: (state) => ({
@@ -114,6 +121,7 @@ async function registerSentryPiniaPlugin() {
 }
 
 export async function initPiniaPlugins() {
+    registerPiniaActionTrailPlugin();
     await registerSentryPiniaPlugin();
 }
 
diff --git a/src/stores/vrcx.js b/src/stores/vrcx.js
index bb89716d..c76d5ef8 100644
--- a/src/stores/vrcx.js
+++ b/src/stores/vrcx.js
@@ -10,6 +10,7 @@ import { debounce, parseLocation } from '../shared/utils';
 import { AppDebug } from '../service/appConfig';
 import { database } from '../service/database';
 import { failedGetRequests } from '../service/request';
+import { getPiniaActionTrail } from '../plugin/piniaActionTrail';
 import { refreshCustomScript } from '../shared/utils/base/ui';
 import { useAdvancedSettingsStore } from './settings/advanced';
 import { useAvatarProviderStore } from './avatarProvider';
@@ -527,12 +528,18 @@ export const useVrcxStore = defineStore('Vrcx', () => {
             if (advancedSettingsStore.sentryErrorReporting) {
                 try {
                     import('@sentry/vue').then((Sentry) => {
-                        Sentry.captureMessage(
-                            `crash message: ${crashMessage}`,
-                            {
-                                level: 'fatal'
-                            }
-                        );
+                        const trail = getPiniaActionTrail();
+                        Sentry.withScope((scope) => {
+                            scope.setLevel('fatal');
+                            scope.setTag('reason', 'crash-recovery');
+                            scope.setContext('pinia_actions', {
+                                trail,
+                                count: trail.length
+                            });
+                            Sentry.captureMessage(
+                                `crash message: ${crashMessage}`
+                            );
+                        });
                     });
                 } catch (error) {
                     console.error('Error setting up Sentry feedback:', error);