Did,you check the frame rate? You can enter “stat fps” in the console to see it while in the Rift. IMO the stuttering just comes from <75 fps. only really becomes a problem when moving the head, other movments don’t seem to be affected by it much.
If you get <75 fps, try “sg.PostProcessQuality = 0” in the console which seems to be the biggest offender for me. Try the other stuff under sg too.