Hello @Sirius_Tenzo thank you for getting in touch with us.
There are a number of reasons why you might be experiencing lag and performance issues in the game, that can be related to hardware, software, Windows settings, GPU settings, in-game settings, connectivity or the game itself.
Would you please run through all of the steps listed in our troubleshooting guide to see if this can improve your game's performance or help rule a few possible causes out? > ...