Android app freezes after switching apps

Possibly, but whatever I try here on Android 13 it does not freeze.

Strange.. Now even the app turns black when trying to switch to it again and a popup apears "qtVLm isn't responding". With the options to close the app or wait. I do not encounter this with any other apps. Are there any error logs or something in qtvlm that could help identify the cause of this issue?

I need more information:
What charts are loaded ?
openGL is activated ?
NMEA is running ?
What kind of NMEA incoming/outgoing channels are enabled ?
What sensors are enabled?
And any other useful information (do you have a dAISy connected, do you have AIS and/or AIS via Internet, etc.

At this moment i am not at the boat and mainly use qtvlm for routing as a preperation to a upcomming crossing. Therefore there is not much enabled. OpenGL is off, NMEA is not running, AIS is not running, only internal sensors (compass), gps are used. No charts installed. It is basically an empty installation. I have tried to add cm93 maps but didn't get them to work. I have removed the folder link now to see if that makes any difference. I will also try to completely remove te app and install it again to see if that makes any difference. Thank you for the help!

I removed the cm93 folder without effect. I then reinstalled the full app, still the same problem. It is now crashing every time i switch to another app. The process is as follows: i open the qtvlm app, everything works fine>i switch to another app, for example navionics using the switch apps button in android>i switch back to qtvlm using the same method>qtvlm turn black and after a short period the "qtvlm is not responing" popup appears.

What kind of tablet is that ?