diff --git a/projects/v3/src/app/components/description/description.component.html b/projects/v3/src/app/components/description/description.component.html
index cd8253c03..3358f9fcf 100644
--- a/projects/v3/src/app/components/description/description.component.html
+++ b/projects/v3/src/app/components/description/description.component.html
@@ -1,5 +1,5 @@
 <div class="container">
-  <div class="text-content" role="region" [attr.aria-label]="name || 'Content'">
+  <div class="text-content" role="region" [attr.aria-label]="ariaLabel || name || 'Content'">
     <ng-container *ngIf="nonCollapsible; else animated">
       <div id="{{name}}" #description [innerHtml]="content | detectLanguage"
       class="full-height"></div>
@@ -26,7 +26,7 @@
       (keydown.space)="openShut(); $event.preventDefault()"
       [attr.aria-expanded]="!isTruncating"
       [attr.aria-controls]="name"
-      [attr.aria-label]="isTruncating ? 'Show more content' : 'Show less content'"
+      [attr.aria-label]="isTruncating ? ('Show more of ' + (ariaLabel || 'content')) : ('Show less of ' + (ariaLabel || 'content'))"
       i18n-aria-label
       class="ion-focusable">
       <ng-container *ngIf="isTruncating">
diff --git a/projects/v3/src/app/components/description/description.component.ts b/projects/v3/src/app/components/description/description.component.ts
index ce5be61fe..9f9cfe6d4 100644
--- a/projects/v3/src/app/components/description/description.component.ts
+++ b/projects/v3/src/app/components/description/description.component.ts
@@ -1,37 +1,26 @@
-import { Component, Input, ViewChild, ElementRef, AfterViewInit, OnChanges, SimpleChange, ViewEncapsulation, Output, EventEmitter } from '@angular/core';
+import { Component, Input, ViewChild, ElementRef, AfterViewInit, OnChanges, SimpleChanges, ViewEncapsulation, Output, EventEmitter } from '@angular/core';
+import { SafeHtml } from '@angular/platform-browser';
 import { BrowserStorageService } from '@v3/services/storage.service';
 
 @Component({
   selector: 'app-description',
   templateUrl: 'description.component.html',
   styleUrls: ['./description.component.scss'],
-  encapsulation: ViewEncapsulation.ShadowDom,
-  /*animations: [
-    trigger('truncation', [
-      state('show', style({
-        'max-height': '1000px !important',
-      })),
-      state('hide', style({
-        'max-height': '90px !important',
-      })),
-      transition('* <=> *', [
-        animate('0.5s ease-in-out')
-      ])
-    ]),
-  ]*/
+  encapsulation: ViewEncapsulation.None,
 })
-export class DescriptionComponent implements OnChanges {
+export class DescriptionComponent implements OnChanges, AfterViewInit {
   heightLimit = 145; // more accurately adjusted
   isTruncating: boolean;
   heightExceeded: boolean;
   elementHeight: number;
   hasBeenTruncated: boolean; // prevent onChange replace the collapsed content
 
-  @Input() name; // unique identity of parent element
-  @Input() content;
-  @Input() isInPopup;
+  @Input() name: string; // unique identity of parent element
+  @Input() content: SafeHtml;
+  @Input() isInPopup: boolean;
   @Input() nonCollapsible?: boolean;
-  @Output() hasExpanded? = new EventEmitter();
+  @Input() ariaLabel?: string;
+  @Output() hasExpanded? = new EventEmitter<boolean>();
   @ViewChild('description') descriptionRef: ElementRef;
 
   constructor(
@@ -40,43 +29,40 @@ export class DescriptionComponent implements OnChanges {
     this.hasBeenTruncated = false;
   }
 
-  ngOnChanges(changes: { [propKey: string]: SimpleChange}) {
-        // reset to default
-    if (this.hasBeenTruncated === false) {
+  ngOnChanges(changes: SimpleChanges) {
+    if (changes.content && !changes.content.firstChange) {
+      this.hasBeenTruncated = false;
       this.isTruncating = false;
       this.heightExceeded = false;
+      this.calculateHeight();
     }
+  }
 
-    this.content = changes.content.currentValue;
+  ngAfterViewInit() {
     this.calculateHeight();
   }
 
   calculateHeight(): void {
-    if (this.nonCollapsible === true) {
+    if (this.nonCollapsible === true || !this.storage.getUser().truncateDescription) {
       return;
     }
 
-    if (!this.storage.getUser().truncateDescription) {
-      return;
-    }
-    setTimeout(
-      () => {
+    setTimeout(() => {
+      if (this.descriptionRef?.nativeElement) {
         this.elementHeight = this.descriptionRef.nativeElement.clientHeight;
         this.heightExceeded = this.elementHeight >= this.heightLimit;
 
-        if (this.heightExceeded) {
+        if (this.heightExceeded && !this.hasBeenTruncated) {
           this.isTruncating = true;
           this.hasBeenTruncated = true;
         }
-              },
-      700
-    );
+      }
+    }, 300); // Reduced timeout
   }
 
   openShut(): void {
     this.isTruncating = !this.isTruncating;
     this.hasExpanded.emit(!this.isTruncating);
-    return;
   }
 }
 
diff --git a/projects/v3/src/app/components/multi-team-member-selector/multi-team-member-selector.component.html b/projects/v3/src/app/components/multi-team-member-selector/multi-team-member-selector.component.html
index a890deb84..6b1f9bda7 100644
--- a/projects/v3/src/app/components/multi-team-member-selector/multi-team-member-selector.component.html
+++ b/projects/v3/src/app/components/multi-team-member-selector/multi-team-member-selector.component.html
@@ -46,7 +46,7 @@ <h3 class="for-accessibility" [id]="'multi-team-member-selector-question-' + que
         <ion-checkbox
           [attr.aria-label]="teamMember.userName"
           color="success"
-          [checked]="(innerValue || submission?.answer)?.includes(teamMember.key)"
+          [checked]="isSelected(teamMember)"
           [value]="teamMember.key"
           slot="start"
           (ionChange)="onChange(teamMember.key)"
diff --git a/projects/v3/src/app/components/topic/topic.component.html b/projects/v3/src/app/components/topic/topic.component.html
index 51d8aa676..2136b577c 100644
--- a/projects/v3/src/app/components/topic/topic.component.html
+++ b/projects/v3/src/app/components/topic/topic.component.html
@@ -1,9 +1,10 @@
 <div *ngIf="topic" class="ion-padding main-content" style="min-height: 100%;">
-  <div class="headline-2 topic-title" aria-live="polite" role="heading" [innerHtml]="sanitizedTitle"></div>
+  <div class="headline-2 topic-title" aria-live="polite" role="heading" [innerHTML]="sanitizedTitle"></div>
   <div *ngIf="topic.videolink && topic.videolink !=='magiclink'" class="text-center topic-video">
-    <div *ngIf="iframeHtml" class="video-embed" [innerHtml]="iframeHtml"></div>
+    <div *ngIf="iframeHtml" class="video-embed" [innerHTML]="iframeHtml"></div>
     <video
       *ngIf="!iframeHtml"
+      [attr.id]="'topic-video-' + topic.id"
       class="video-embed topic-video"
       [ngClass]="{'desktop-view': !isMobile}"
       width="100%"
@@ -23,7 +24,7 @@
       </span>
     </div>
     <div class="audio-player">
-      <audio controls class="audio-element" preload="metadata">
+      <audio [attr.id]="'topic-audio-' + topic.id" controls class="audio-element" preload="metadata">
         <source [src]="topic.audio.link" type="audio/mpeg">
         Your browser does not support the audio element.
       </audio>
@@ -32,9 +33,10 @@
 
   <app-description *ngIf="topic.content"
     class="body-2"
-    [name]="'topic'+topic.id"
+    [name]="'topic-description-' + topic.id"
     [content]="topic.content"
     [nonCollapsible]="true"
+    [ariaLabel]="'Topic content'"
   ></app-description>
 
   <ion-list *ngIf="topic.files && topic.files.length > 0" class="ion-margin-vertical">
diff --git a/projects/v3/src/app/components/topic/topic.component.ts b/projects/v3/src/app/components/topic/topic.component.ts
index 8f6f24203..a28087338 100644
--- a/projects/v3/src/app/components/topic/topic.component.ts
+++ b/projects/v3/src/app/components/topic/topic.component.ts
@@ -150,12 +150,17 @@ export class TopicComponent implements OnInit, OnChanges, OnDestroy {
   // convert other brand video players to custom player.
   private _initVideoPlayer() {
     setTimeout(() => {
-      this.utils.each(this.document.querySelectorAll('.video-embed'), embedVideo => {
+      this.utils.each(this.document.querySelectorAll('.video-embed'), (embedVideo, index) => {
         embedVideo.classList.remove('topic-video');
         if (!this.utils.isMobile()) {
           embedVideo.classList.remove('desktop-view');
         }
         embedVideo.classList.add('plyr__video-embed');
+
+        // add unique id to prevent duplicate ids from plyr
+        const uniqueId = `plyr-${this.topic?.id || 'unknown'}-${index}-${Date.now()}`;
+        embedVideo.setAttribute('data-plyr-id', uniqueId);
+
         new Plyr(embedVideo as HTMLElement, { ratio: '16:9' });
         // if we have video tag, plugin will adding div tags to wrap video tag and main div contain .plyr css class.
         // so we need to add topic-video and desktop-view to that div to load video properly .
diff --git a/projects/v3/src/app/pipes/language.pipe.ts b/projects/v3/src/app/pipes/language.pipe.ts
index 1b8ee4d42..33df63ee1 100644
--- a/projects/v3/src/app/pipes/language.pipe.ts
+++ b/projects/v3/src/app/pipes/language.pipe.ts
@@ -1,23 +1,54 @@
 import { Pipe, PipeTransform } from '@angular/core';
+import { DomSanitizer, SafeHtml } from '@angular/platform-browser';
 import { UtilsService } from '@v3/services/utils.service';
 
 /**
- * Pipe to add lang attributes to HTML content for WCAG 3.1.2 Language of Parts compliance
- * Processes HTML content and wraps foreign language passages with lang attributes
+ * Pipe to add lang attributes to HTML content for WCAG 3.1.2 Language of Parts compliance.
+ * Processes HTML content and wraps foreign language passages with lang attributes.
+ * Handles SafeHtml and includes caching for performance.
  */
 @Pipe({
   name: 'detectLanguage',
   standalone: false
 })
 export class LanguageDetectionPipe implements PipeTransform {
-  constructor(private utils: UtilsService) {}
+  private lastContent: string | SafeHtml | null | undefined;
+  private lastResult: SafeHtml;
 
-  transform(htmlContent: string | null | undefined, defaultLang?: string): string {
-    if (!htmlContent) {
-      return '';
+  constructor(
+    private utils: UtilsService,
+    private sanitizer: DomSanitizer
+  ) {}
+
+  transform(htmlContent: string | SafeHtml | null | undefined, defaultLang?: string): SafeHtml {
+    if (htmlContent === this.lastContent) {
+      return this.lastResult;
+    }
+
+    let contentString: string;
+    if (typeof htmlContent === 'string') {
+      contentString = htmlContent;
+    } else if (htmlContent instanceof Object && 'changingThisBreaksApplicationSecurity' in htmlContent) {
+      // This is a way to check if it's a SafeHtml object without private APIs.
+      // The ideal way is to get the raw string, but SafeHtml is opaque.
+      // This workaround extracts the value, but it's fragile.
+      // A better long-term solution is to apply language detection *before* sanitization.
+      contentString = (htmlContent as any).changingThisBreaksApplicationSecurity;
+    } else {
+      contentString = '';
     }
 
-    return this.utils.addLanguageAttributes(htmlContent, defaultLang);
+    if (!contentString) {
+      this.lastResult = this.sanitizer.bypassSecurityTrustHtml('');
+      this.lastContent = htmlContent;
+      return this.lastResult;
+    }
+
+    const processedContent = this.utils.addLanguageAttributes(contentString, defaultLang);
+    this.lastResult = this.sanitizer.bypassSecurityTrustHtml(processedContent);
+    this.lastContent = htmlContent;
+
+    return this.lastResult;
   }
 }
 
diff --git a/projects/v3/src/app/services/ngx-embed-video.service.ts b/projects/v3/src/app/services/ngx-embed-video.service.ts
index 51c79c0f8..0cb40c7b6 100644
--- a/projects/v3/src/app/services/ngx-embed-video.service.ts
+++ b/projects/v3/src/app/services/ngx-embed-video.service.ts
@@ -58,20 +58,23 @@ export class EmbedVideoService {
 
   public embed_youtube(id: string, options?: any): SafeHtml {
     options = this.parseOptions(options);
+    const uniqueId = `youtube-embed-${id}-${Date.now()}`;
 
-    return this.sanitize_iframe(`<iframe src="https://www.youtube.com/embed/${id}${options.query}"${options.attr} frameborder="0" allowfullscreen></iframe>`);
+    return this.sanitize_iframe(`<iframe id="${uniqueId}" src="https://www.youtube.com/embed/${id}${options.query}"${options.attr} frameborder="0" allowfullscreen></iframe>`);
   }
 
   public embed_vimeo(id: string, options?: any): SafeHtml {
     options = this.parseOptions(options);
+    const uniqueId = `vimeo-embed-${id}-${Date.now()}`;
 
-    return this.sanitize_iframe(`<iframe src="https://player.vimeo.com/video/${id}${options.query}"${options.attr} frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>`);
+    return this.sanitize_iframe(`<iframe id="${uniqueId}" src="https://player.vimeo.com/video/${id}${options.query}"${options.attr} frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>`);
   }
 
   public embed_dailymotion(id: string, options?: any): SafeHtml {
     options = this.parseOptions(options);
+    const uniqueId = `dailymotion-embed-${id}-${Date.now()}`;
 
-    return this.sanitize_iframe(`<iframe src="https://www.dailymotion.com/embed/video/${id}${options.query}"${options.attr} frameborder="0" allowfullscreen></iframe>`);
+    return this.sanitize_iframe(`<iframe id="${uniqueId}" src="https://www.dailymotion.com/embed/video/${id}${options.query}"${options.attr} frameborder="0" allowfullscreen></iframe>`);
   }
 
   public embed_image(url: any, options?: any): Promise<{