The cause of mouse stuttering when pressing keys has been 100% found

That's interesting. I'm using win 10 and also experiencing such a stuttering. Funny thing is, that there is no problem for me while playing campaign mode. If anyone upgraded from win 10 to win 11 and the issue dissappeared - please let us know. Btw glad to know that it's a common issue. I've came back from a lil break, joined up bf6 match and was shocked. Playing with steam set to offline helped to reach 0.1% lows from 8 back to around 40 fps but the key-stuttering still is the thing unfortunately