diff --git a/mods/features/adblock.js b/mods/features/adblock.js
index 18e8fa82..7ca59452 100644
--- a/mods/features/adblock.js
+++ b/mods/features/adblock.js
@@ -672,6 +672,15 @@ function processResponsePayload(payload, detectedPage) {
         hasMore: !!plc.continuations,
       });
     }
+    // Same accumulator hook as the object-root handler above. Confirmed
+    // necessary on-device: three continuations arrived through that path, all
+    // with hasContinuation:true, and the FINAL batch (8 of 68 items, the one
+    // carrying no continuation token) only ever came through here. Without
+    // this the accumulator never sees a completion and full_cache.from_native
+    // never fires, so the slow re-download stays on the critical path.
+    // Must run BEFORE filterContinuationItems, which reduces an all-watched
+    // batch to the single kept helper.
+    noteContinuationBatch(String(window.location?.hash || ''), plc.contents, !!plc?.continuations);
     plc.contents = filterContinuationItems(plc.contents, detectedPage, !!plc?.continuations, 'arrayPayload.playlist.continuation');
   }
   const arrayTopPlaylistRenderer = payload?.contents?.tvBrowseRenderer?.content?.tvSurfaceContentRenderer?.content?.twoColumnRenderer?.rightColumn?.playlistVideoListRenderer;
diff --git a/mods/features/playlistBatchCollect.js b/mods/features/playlistBatchCollect.js
index 6e8d175a..0c6ac422 100644
--- a/mods/features/playlistBatchCollect.js
+++ b/mods/features/playlistBatchCollect.js
@@ -94,7 +94,7 @@
  * Load → "Load All at Once".
  */
 
-import { appendFileOnlyLog } from './hideWatched.js';
+import { appendFileOnlyLog, getItemVideoId } from './hideWatched.js';
 import { configRead } from '../config.js';
 
 function _log(label, payload) {
@@ -490,11 +490,20 @@ export function noteContinuationBatch(key, contents, hasMore) {
   if (!Array.isArray(contents) || !contents.length) return;
   if (getCachedFullPlaylist(key)) return; // already complete; this is the reloaded pass
 
+  // Dedupe by video id. Two handlers feed this (object-root and array-root),
+  // and a batch that reached both would otherwise be counted twice, putting
+  // duplicate tiles in the cached playlist.
+  if (!window.__ttContinuationAcc || window.__ttContinuationAcc.key !== key) {
+    window.__ttContinuationAcc = { key, contents: [], seen: {} };
+  }
   const acc = window.__ttContinuationAcc;
-  if (!acc || acc.key !== key) {
-    window.__ttContinuationAcc = { key, contents: contents.slice() };
-  } else {
-    acc.contents = acc.contents.concat(contents);
+  for (const item of contents) {
+    const id = getItemVideoId(item);
+    if (id) {
+      if (acc.seen[id]) continue;
+      acc.seen[id] = true;
+    }
+    acc.contents.push(item);
   }
 
   if (hasMore) return;