Thank you for the feedback!
I adjusted the 3D settings and the game seems to be running now. (But only if I set the display orientation to portrait)
BUT: sound and gameplay is still slow-mo.
I also had problems with my knobs, but I figured it out in the settings.
For the sound I tested 16bit 48000 Hz and 44100 Hz from my motherboard audio jack, but I did not notice a difference.
log.txt