Android ANR: "Input dispatching timed out (... FocusEvent/MotionEvent)"

[Hans♫ 75]

We have a few users that experience freezing and very slow response in our Android App. In Google Play Console, we get these ANR messages:

Quote

 

Input dispatching timed out (b3a5d35 com.company.android/com.embarcadero.firemonkey.FMXNativeActivity (server) is not responding. Waited 10002ms for FocusEvent(hasFocus=false))
Input dispatching timed out (1ee297b com.company.android/com.embarcadero.firemonkey.FMXNativeActivity (server) is not responding. Waited 10002ms for MotionEvent)
Input dispatching timed out (34bd534 com.company.android/com.embarcadero.firemonkey.FMXNativeActivity (server) is not responding. Waited 10000ms for MotionEvent)

 

The app works on 99% of the devices, so it is not a general problem, and we cannot reproduce it on our devices.

What can be the reason for these problems?

 

Another user has posted a StackOverflow question about this a year ago - but no answers:
https://stackoverflow.com/questions/66657413/how-to-solve-anr-on-android-firemonkey

 

PS. Could it be related to this warning ("Non-SDK API: Landroid/view/MotionEvent") that we also have?
https://stackoverflow.com/questions/70350726/delphi-11-app-in-android-play-store-shows-warning-non-sdk-api