Android : Map is laggy when using one finger but not two

[treacks5]

I have a performance issue when the user is moving the map with one finger. The screen start to freeze more and more when the user is dragging the map with one finger. I post a record below :
https://user-images.githubusercontent.com/53431511/157230094-0c9f7f82-cff7-4179-9367-ae5b7199ae8f.mov

Another video when I move the map with two fingers (no freeze issue) :
https://user-images.githubusercontent.com/53431511/157230530-a0ced2e2-580a-42f4-a2ce-4c49106d4602.mov

Here is the code (just a container with the Mapbox map) :

@override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Container(
      width: MediaQuery.of(context).size.width,
      height: MediaQuery.of(context).size.height,
      child: MapboxMap(
        accessToken:
            'ACCESS_TOKEN',
        styleString: 'mapbox://styles/mapbox/outdoors-v10?optimize=true',
        initialCameraPosition: const CameraPosition(target: LatLng(0.0, 0.0)),
        // attributionButtonMargins: Point(0, 0),
      ),
    );
  }

It is weird because when you use 2 fingers you are doing more gestures on the map than with just one.

I precise that it is just an Android issue, iOS is working nice with one finger.

Flutter configuration :

Flutter 2.8.1 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 77d935af4d (3 months ago) • 2021-12-16 08:37:33 -0800
Engine • revision 890a5fca2e
Tools • Dart 2.15.1

Does someone have an idea on why I have this behaviour ?

[felix-ht]

fixed on master with #779