Mouse becomes incredibly sensitive

Yes me too. This has started happening in the last week or so. I thought it was my mouse (Corsair M65) so bought another (Razer Deathadder) but the problem persisted. I reached out to the community and tried their suggestions but to no avail. I have uninstalled all programs that have been installed recently and all mouse software and then reinstalled the Razer Synapys only. Still the problem persists. The only thing I find that works is, when the problem starts, open your mouse software program and then return to game. This sorts the problem til the next time (about 5 games ish). I'm thinking about uninstalling then reinstalling BF4 as I have no confidence in whether I am actually playing on my desired sensitivity. Have you managed to resolve your issue, if so how?

I have the same Problem as of today. I played BF4  for 2 years now, always worked fine. Today I upgraded origin, startet BF4 and after about 10 minutes playing the mouse sensitivity suddenly jumped to extremes. Since then the Problem occurs almost immideately after starting a game (10 sec max).

The issue only occurs when aiming in game, using the cursor in menus works just fine.

Switching to another mouse while playing fixes the problem for about 10 seconds.

I still really like this game and would like to continue playing.

Is there any known solution to this problem?