Nice guide, thanks!
However, as soon as I turn of ANY type of AA and/or AF (tried all supported modes) my fps drops from around 50-60 to 15-25, so I'm not using it. Those ingame settings seem to work nicely here, though. Thanks again!
No idea, but ... have you tried a "Timer Boot-Zeit Prüfung" yet (found in Avast > Menu > Zeitsteuerung für Boot-Zeit Prüfung)...? It'll check your system before the OS is loaded.