Hard to tell if they are the same as in VR but 2D has never run completely smoothly either (although the 24 Alpha did). But I think this may be related to sync rather than performance issues. When setup correctly, VR has always been much smoother than 2D for me for some reason, even though it gets more FPS than VR.
VR, even now, is always locked at 45fps for me at 90hz. So the stutters are either frame timing or sync issues (between 45fps and 90hz) for me. I need to reinstall CapframeX later…