I'm quite sensitive to these jitters, but luckily it's quick and easy to replace SPF_INTERPOLATE by SPF_SCALEDNOLERP with Notepad++.
Great mod as always by the way!
I've noticed some kind of camera stutter when firing weapons with your mods.
With some research on my own, I've been able to fix it by replacing every SPF_INTERPOLATE with SPF_SCALEDNOLERP inside the zscript files.
I've only tested this with GZDoom so it may not be compatible with LZDoom.
If anyone wants to use the Shogo widescreen patch with this fix, grab this file.