Linear and dynamic response curve has minimum rotation speed (Xbox)

I noticed when i select linear response curve the game has noticeable rotation speed. Which doesn't happen with any other response curve (other than dynamic, in which case minimum rotation speed is even higher)

I compared it to BFBC2 response curve (which according to graph in menu, as well as personal feeling is the closest to linear, but not exactly): Factory new controller with 0 dead zone, trying to push it in position where it start rotating at minimum speed.

And as you can see in the video, linear curve has quite large minimum speed. Also, you can't see it in the video, but RS still has noticeable dead zone (despite being set to 0)

I also check controller behaviour in Call of Duty Modern Warfare 2023 and Titanfall 2 (both set to linear curve with 0 dead zone): in those games rotation works just fine.

The "duct tape fix" of BFBC2 response curve is not ideal solution. I would like to have proper linear curve.

Also, why there is a limit on attachment size? I can't upload my recording directly, so i need to lower framerate to 30 fps in editor. So stupid limitation.