thx guys - i found my problem on my side - so maybe if somebody has the same config as me - this may help!
i use TrackIR5 and i also bought TOBII - installed everything - but in the software i deactivated it. So when restarting the pc - even if TOBII was not activated - it seems to interfere with the view thingy - and so TOBII always was resetting the view to standard. After i disconnected it with the USB connection - the problem is gone!
I also had the interference in the other way - so trying to use TOBII - and not disconnecting TrackIR also didn’t work correctly - so the view in the sim with TOBII always was shaking - this was gone, after disconnecting TRACKIR.
Thx everybody for trying to help - maybe i can also help some…
nice day - nice simming!