Thanks for the reply! ^^
Well, I did try some local recordings and the game didn't lag for me ever, though I never tried to crash most/all the enemies and locally recording I didn't have any issues (except my microphone getting quiet from time to time).
My "bug" that appears only wastes 3-6 seconds as it only appears at a start of a race where the screen begins to "burn" in black and red and I don't see anything else, so the only cure for this is just to get out of the race (restart race doesn't fix it) and start it again. Another thing I saw is starting the game and then start streaming with OBS, the race turns completely white and even restarting a race doesn't work, I need to go out of career mode, start a free race, quit the race and then enter career mode again to fix it.
I will probably get the steam version as backup eventually, hope the 2 versions don't interfere with each other in the game files or registry.
EDIT: I removed last part of this post as it is not relevant to my original question.