I checked and its still there, lol, unbeleivable that they let it like this for more than a week, and probably leave it like this for holidays.. in that case I have a fix: go to steam library, right click on BF6 and and press unistall, play something else
https://steamcommunity.com/sharedfiles/filedetails/?id=3626300845 - read here)
In short, the first 3-4 keys you press on your keyboard after launching the game are guaranteed not to reproduce this bug until the next reboot.
So, press W A D C keys as the most necessary ones in conjunction with mouse movements.
The remaining buttons will still be laggy, but not all of them.
For example, on my first press W A D C, the buttons Q E are same protected from the bug, at least.
