It seems since the patch, that I now have a "studder" in first person when I move my camera vertically....
Did you have the /largeaddressaware flag on your exe? If you don't not know what I am talking about then your stutter is a placebo effect as NOTHING was changed in your exe other than DRM.
Edit:
To the OP, not to be rude but there are dozens of threads about this patch in the PC tech forum, it would have been easier to look at all those instead of making a new one in the General forum.