Specifically, yoke movement. It seems quite jerky, which is to say it appears to be a 1:1 of my controller input. While in theory a 1:1 representation is desirable for the sake of realism, in practice it looks jittery. It seems that other sims must have some sort of interpolation process to smooth out the visual animation of yoke/throttle/mixture because I only notice that issue with FFS.
On a side note, I'm loving the buttery smoothness in VR. I never got that kind of stutter-free performance from FSX or X-Plane even with all settings on low, and the smooth performance of FFS feels so much more immersive.