Ок, you response

Now, give us more details about your setup, I directed you to other guidelines that you should have followed
[Only registered and activated users can see links. ]
some addons, what languages, standard or tts voice, etc ...

But, you should ask the question in the topic for Nextgen, this is Primo
directly in the PAL thread (edit...posts moved to proper topic...)
or even better in
[Only registered and activated users can see links. ]
maybe the answer is already there...

Btw, from this short video I can conclude that the problem is quite pronounced.
It looks more like a conflict between the system/sound driver and iGO.
Check system permissions, etc

I would recommend that you eventually try [Only registered and activated users can see links. ]
Again, Android 12, you have to set the system and permissions very carefully. It is also very possible that it must be installed completely in the internal storage of the device
Also, set the battery mode (energy saving) so that the software has no restrictions. Not "Optimized" but "Unrestricted". If you decide for TTS, you have to do the same with it.

Edit:
on XDA Forum a lot of sound problems have been reported on that device (SPRD QP1A) in various situations.