diff --git a/app/static/js/services/bridgeAudioNode.js b/app/static/js/services/bridgeAudioNode.js
index 503f71d..c5a00a0 100644
--- a/app/static/js/services/bridgeAudioNode.js
+++ b/app/static/js/services/bridgeAudioNode.js
@@ -32,7 +32,7 @@
       console.warn('[BridgeAudioNode] AudioWorklet unavailable — ScriptProcessor fallback');
       return false;
     }
-    var url = '/static/js/services/bridgeAudioWorklet.js?v=202608311820';
+    var url = '/static/js/services/bridgeAudioWorklet.js?v=202608311809';
     _ctx.audioWorklet.addModule(url).then(function () {
       if (!_initialized) return; // disconnect() happened while loading
       if (_useWorklet) return;   // already set up (init retry)
diff --git a/app/static/js/services/bridgeAudioWorklet.js b/app/static/js/services/bridgeAudioWorklet.js
index 4e22d34..7f33b09 100644
--- a/app/static/js/services/bridgeAudioWorklet.js
+++ b/app/static/js/services/bridgeAudioWorklet.js
@@ -1,28 +1,24 @@
 // app/static/js/services/bridgeAudioWorklet.js
 // VSTi crackle fix: audio sink chay tren audio thread (khong jank main thread).
-// - Ring block 256 mau, toi da 48 block (~256ms @48k) — hap thu jitter pump
-//   (V45.28: 32->48 de dung wobble VST2 loop/tremolo khi nhan chord — chord
-//   nhieu voice -> render loop C++ stall dai hon ~170ms -> underrun lap lai
-//   (fade ve 0) nghe nhu wobble; 8->16 (V45) dung tremolo crackle, 16->32
-//   (V45.27) dung crackle, 32 van chua du cho stall chord). Flush o play
-//   start (app.jsx) xoa ring nen do tre khong tang: ring thuong can o preview.
+// - Ring block 256 mau, toi da 32 block (~170ms @48k) — hap thu jitter pump
+//   (V45.27: 16->32 de dung crackle VST2 loop/tremolo — render loop C++ bi
+//   stall khi instrument xu li loop/tremolo nang CPU; 8->16 truoc do da dung
+//   tremolo crackle, 16 van chua du cho stall >85ms). Flush o play start
+//   (app.jsx) xoa ring nen do tre khong tang: ring thuong can o preview.
 // - Underrun: fade ve 0 thay vi click (hard silence).
 // - Resume sau silence: fade vao tu 0.
-// - Overrun: drop block cu nhat + crossfade tich luy — moi block drop cong
-//   256 mau fade, cap 1024 (~21ms) — crossfade dai de tranh blip/wow khi
-//   chord nhieu voice bi drop loat block (64 mau = 1.3ms qua ngan).
+// - Overrun: drop block cu nhat + crossfade 64 mau tai diem drop (het click).
 // - Stats: dem overrun/underrun, gui ve main thread moi ~0.5s — kiem tra
 //   con crackle nao la do ring can (underrun) hay ring tran (overrun).
 class BridgeAudioSinkProcessor extends AudioWorkletProcessor {
   constructor() {
     super();
     this._ring = [];
-    this._MAX = 48;
+    this._MAX = 32;
     this._gain = 1.0;
     this._lastOutL = 0.0;
     this._lastOutR = 0.0;
-    this._skipFade = 0;      // >0: con lai cua crossfade dang chay sau overrun drop
-    this._fadeLen = 0;       // tong chieu dai crossfade hien tai (cap 1024)
+    this._skipFade = 0;      // >0: crossfade dang chay sau overrun drop
     this._skipFromL = 0.0;
     this._skipFromR = 0.0;
     this._wasUnderrun = false;
@@ -35,18 +31,14 @@ class BridgeAudioSinkProcessor extends AudioWorkletProcessor {
         this._ring.push({ l: m.l, r: m.r });
         while (this._ring.length > this._MAX) {
           // overrun: bo block cu nhat; lan consume toi se crossfade ranh gioi
-          // (tich luy: moi block drop cong 256 mau fade, cap 1024 — crossfade
-          // dai hon de tranh blip/wow khi drop loat block o chord nhieu voice)
           this._ring.shift();
-          this._skipFade = Math.min(this._skipFade + 256, 1024);
-          this._fadeLen = this._skipFade;
+          this._skipFade = 64;
           this._stats.overruns++;
         }
       } else if (m.type === 'flush') {
         this._ring.length = 0;
         this._gain = 1.0;
         this._skipFade = 0;
-        this._fadeLen = 0;
       }
     };
   }
@@ -64,9 +56,8 @@ class BridgeAudioSinkProcessor extends AudioWorkletProcessor {
         const avail = blk.l.length;
         const take = Math.min(avail, n - w);
         if (this._skipFade > 0) {
-          const done = this._fadeLen - this._skipFade;
           for (let i = 0; i < take; i++) {
-            const t = (done + i) / this._fadeLen;
+            const t = i / 64;
             L[w + i] = (this._lastOutL * (1 - t) + blk.l[i] * t) * this._gain;
             R[w + i] = (this._lastOutR * (1 - t) + blk.r[i] * t) * this._gain;
           }
diff --git a/app/templates/index.html b/app/templates/index.html
index 8d3cc38..c18155b 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -40,7 +40,7 @@
     <script src="/static/js/services/soundfontStorage.js?v=202608290945"></script>
     <script src="/static/js/services/soundfontPlayer.js?v=202608290945"></script>
     <script src="/static/js/services/nativeBridgeService.js?v=202608291510"></script>
-    <script src="/static/js/services/bridgeAudioNode.js?v=202608311820"></script>
+    <script src="/static/js/services/bridgeAudioNode.js?v=202608311809"></script>
     <script src="/static/js/services/unifiedMidiRouter.js?v=202608311756"></script>
     <script src="/static/js/services/audioRoutingEngine.js?v=202608290945"></script>
     <script src="/static/js/services/aiGateway.js?v=202608290945"></script>