diff --git a/flutter_hbb/lib/common.dart b/flutter_hbb/lib/common.dart
index ba1e65282..4605c8472 100644
--- a/flutter_hbb/lib/common.dart
+++ b/flutter_hbb/lib/common.dart
@@ -80,13 +80,12 @@ class FFI {
     setByName('connect', id);
   }
 
-  static void _clearRgbaFrame() {
+  static void clearRgbaFrame() {
     if (_lastRgbaFrame != null && _lastRgbaFrame != nullptr)
       _freeRgba(_lastRgbaFrame);
   }
 
   static Uint8List getRgba() {
-    _clearRgbaFrame();
     _lastRgbaFrame = _getRgba();
     if (_lastRgbaFrame == null || _lastRgbaFrame == nullptr) return null;
     final ref = _lastRgbaFrame.ref;
@@ -115,7 +114,6 @@ class FFI {
   }
 
   static void close() {
-    _clearRgbaFrame();
     setByName('close', '');
   }
 
diff --git a/flutter_hbb/lib/remote_page.dart b/flutter_hbb/lib/remote_page.dart
index dc198afa2..34d8050cd 100644
--- a/flutter_hbb/lib/remote_page.dart
+++ b/flutter_hbb/lib/remote_page.dart
@@ -21,6 +21,7 @@ class _RemotePageState extends State<RemotePage> {
   ui.Image _image;
   PeerInfo _pi = PeerInfo();
   Display _display = Display();
+  bool _decoding = false;
 
   @override
   void initState() {
@@ -39,6 +40,7 @@ class _RemotePageState extends State<RemotePage> {
     FFI.close();
     _interval.cancel();
     dismissLoading();
+    _decoding = null;
   }
 
   void interval() {
@@ -53,15 +55,21 @@ class _RemotePageState extends State<RemotePage> {
         handleSwitchDisplay(evt);
       }
     }
-    var rgba = FFI.getRgba();
-    if (rgba != null) {
-      ui.decodeImageFromPixels(
-          rgba, _display.width, _display.height, ui.PixelFormat.bgra8888,
-          (__image) {
-        setState(() {
-          _image = __image;
+    if (!_decoding) {
+      var rgba = FFI.getRgba();
+      if (rgba != null) {
+        _decoding = true;
+        ui.decodeImageFromPixels(
+            rgba, _display.width, _display.height, ui.PixelFormat.bgra8888,
+            (__image) {
+          FFI.clearRgbaFrame();
+          if (_decoding == null) return;
+          _decoding = false;
+          setState(() {
+            _image = __image;
+          });
         });
-      });
+      }
     }
   }