IssueTracker

I have identified this problem with orx - our game engine - as well as your agdktunnel sample project.

To summarize, multiple system gestures tend to throttle the frame rate. This is likely by design (Android OS feature), but for sure the game shouldn't slow down? Possibly related to issue 377321469.

Devices tested

Pixel 6 (Android 15), Smooth Display enabled.

Steps to reproduce

1. Clone the games-samples repo, and open the agdktunnel project.
2. Add android:appCategory="game" to the application element in the manifest. (This makes it easier to trigger the throttling.)
3. Change orientation to android:screenOrientation="sensorPortrait". (For convenience.)
4. Remove the android.hardware.vulkan.version feature. (The problem seems easier to reproduce using OpenGL.)
5. Build and run.

Now, on the Main screen, carefully swipe from the bottom so that the Game option pops up (avoid leaving the app since it will not recover from this state). Wait until the popup goes way, and repeat.

Usually, within 10-20 such swipes the frame rate decreases from 90 to 45. At this point you will notice that all animations on the Main screen are much slower. Why is this happening? This effectively gives the user a cheat opportunity!