Unable to use mouse / keyboard controls

Dude!!!! This was the final solution :D 

I do have the glorious gmmk 3 and the polling rate was von 8,000Hz. I´ve set it down to 1000Hz replugged the keyboard into the same USB port and everything is working fine. 

Thank you so much for your help!!!!

First at all thanks for your reply 

There are no controllers plugged in. Only my wireless mouse and keyboard. I´ve also tried it out with a mouse with cable attached but that doesn´t change anything 

I´ve also deleten the bf folder in Documents and disabled the screen overlays. 

Funny thing is: I can write in ingame chat normally. But when it comes to controls it feels like there is a huge delay. For example I press the mouse once for 1-2 seconds which would normally result in a burst of your weapon but it completely fires my magazine.

Is there any Xbox, PlayStation, joysticks, or similar controllers plugged in? If so try unplugging them.

You can also try deleting or moving the Battlefield 2042 folder in Documents to reset the game controls and saved game settings to default.

Another thing to try is disabling any on screen overlays such as Steam, Discord, or EA app overlays.