In game lagging and stuttering since 22-oct patch on PC!

Guys, since today's patch (22-oct) the game is impossible to play! When I enter a game, it is lagging and stuttering. This is unacceptable!!!!!!!!!!!!!!! Every other game is working perfectly fine. I tested CPU, GPU etc, re-installed drivers, etc., changed in game graphical settigs, but no way! The glitcering, lagging, stuttering remains! With patch you ruined the game!