diff --git a/src/libs/ReportUtils.ts b/src/libs/ReportUtils.ts
index e4b82aa36c7a..317ace1d7d4e 100644
--- a/src/libs/ReportUtils.ts
+++ b/src/libs/ReportUtils.ts
@@ -4317,6 +4317,29 @@ function isGroupChat(report: OnyxEntry<Report>): boolean {
     );
 }
 
+/**
+ * Assume any report without a reportID is unusable.
+ */
+function isValidReport(report?: OnyxEntry<Report>): boolean {
+    return Boolean(!report?.reportID);
+}
+
+/**
+ * Check to see if we are a participant of this report.
+ */
+function isReportParticipant(report?: OnyxEntry<Report>, accountID: number): boolean {
+    if (!accountID) {
+        return false;
+    }
+
+    // We are not the owner or the manager or a participant
+    if (report?.ownerAccountID !== accountID && report?.managerID !== accountID && !(report?.participantAccountIDs ?? []).includes(accountID)) {
+        return false;
+    }
+
+    return true;
+}
+
 function shouldUseFullTitleToDisplay(report: OnyxEntry<Report>): boolean {
     return isMoneyRequestReport(report) || isPolicyExpenseChat(report) || isChatRoom(report) || isChatThread(report) || isTaskReport(report);
 }
@@ -4613,6 +4636,8 @@ export {
     shouldDisplayThreadReplies,
     shouldDisableThread,
     getChildReportNotificationPreference,
+    isReportParticipant,
+    isValidReport,
 };
 
 export type {ExpenseOriginalMessage, OptionData, OptimisticChatReport, OptimisticCreatedReportAction};
diff --git a/src/libs/actions/PriorityMode.ts b/src/libs/actions/PriorityMode.ts
index 1d38d09e08a1..1e86c8dd8f1a 100644
--- a/src/libs/actions/PriorityMode.ts
+++ b/src/libs/actions/PriorityMode.ts
@@ -6,6 +6,7 @@ import Log from '@libs/Log';
 import CONST from '@src/CONST';
 import ONYXKEYS from '@src/ONYXKEYS';
 import type {Report} from '@src/types/onyx';
+import * as ReportUtils from '@libs/ReportUtils';
 
 /**
  * This actions file is used to automatically switch a user into #focus mode when they exceed a certain number of reports. We do this primarily for performance reasons.
@@ -120,7 +121,17 @@ function tryFocusModeUpdate() {
             return;
         }
 
-        const reportCount = Object.keys(allReports ?? {}).length;
+        const validReports =  [];
+        Object.keys(allReports ?? {}).forEach((key) => {
+            const report = allReports?.[key];
+            if (ReportUtils.isValidReport(report) || !ReportUtils.isReportParticipant(currentUserAccountID ?? 0, report)) {
+                return;
+            }
+
+            validReports.push(report);
+        });
+
+        const reportCount = validReports.length;
         if (reportCount < CONST.REPORT.MAX_COUNT_BEFORE_FOCUS_UPDATE) {
             Log.info('Not switching user to optimized focus mode as they do not have enough reports', false, {reportCount});
             return;