For some reason I have serious stutter in Oblivion, when I move the mouse left and right I can see it is not smooth but very "stuttery". I don't have this problem in other Bethesda games so don't know what is wrong :/ I have a super good computer (GTX 980 Ti and latest processor, 16gb ram etc) and this happens even though my fps is around 100. Do anyone know how to fix this? I did download the stutter remover mod but that did not solve it for me..

I'm no expert (barely an amateur) on this subject, but it could be that your computer is too fast, not too slow. Oblivion was made for single-core processing and doesn't manage memory as well as later games. Something like that. Hey, I'm trying.

100 fps? Hmm. I would try going into the launcher menu and turning Vsync on. Not sure what'll happen with your monitor, but this would cap my game at 60 most of the time. Try that. OSR (Oblivion Stutter Remover) is really for those whose games have enough mods to cause some sort of problems with frame-skipping. I"m guess you don't actually need OSR yet.