Hello folks.
I very recently installed Kotor II alongside with a small number of mods that looked " must have" to me. Everything seems to be working fine, with one notable exception.
I intend to use minimal amount of WASD when moving my char around and handle all the basics with mouse instead. For some strange reason, every single time I use mouse to steer my character, the camera does this brief, automatic, completely unavoidable tiny back and forth tilt upwards. I'd love to get rid of it. This feels so nauseating that I'm sure it isn't a stock function, but rather some odd bug, mod not working properly or whatnot. Is this a common problem? Any suggestions how to fix it?
I hope I was able to explain my issue properly

I'd like to underline this has nothing to do with the "y-axis" of my mouse, mouse sensitivity or some such, the back and forth tilt is always the same, regardless of how much or little actual y-axis mouse movement happens.
My setup
(This is also the order of installation I used)
Kotor II
Official patchA
Latest official patch
Vista fix
The sith lords restored content mod
Prolog, Peragus, and Harbinger Issue Correction Mod