I understand that this game has some sort of unique mouse behavior but I seem to be experiencing some weird acceleration that seems to be a bug after talking to friends that also have this game.
When I move my mouse very slowly so it takes about 10 seconds to cross my mousepad I turn about 400 degrees. The same mouse distance over about 2 seconds makes me turn at least 800 degrees. The same mouse distance over a split second makes me turn only about 50 degrees or so, with an erratic stopping behavior. This relative behavior of acceleration then negative acceleration exists at all x/y sensitivity, smoothing, and mouse dpi values.
I have tried the fix that I have seen suggested of lowering the GPU_MaxFramesAhead to 1 in the config, but it doesn't do anything.
This bug has been in the bug tracker for a year and accepted as a bug, but bohemia doesn't seem to care to fix it:
https://dev-heaven.net/issues/27127
Has anyone managed to fix this?