I'm seeing the occasional stutter upon System entry as well but only in Systems already discovered by someone, plus multiple Bodies with Geologicals need to be present.
It vanishes quite quickly for me and upon FSS'ing me the Body Details I frequently see precise Data on Geological Planets already (again, only in pre-explored Systems).
(looks like a number of them is being resolved in explored Systems upon System entry, which I personally like; it was a suggestion of mine to begin being computed during the Hyperjump already. Others noted however that Players with weak GPUs might see too many downsides and experience prolonged unstable FPS. I assume this is what happens basically.)
With the solid working of the new FSS probabilities and optional full resolution of any selected Body, there may be more downsides than benefit of this process, especially when GPU power is limited and in Systems with plenty of Geological Bodies.
Other than that, I really like the new instant display of relevant Body Info in the FSS, that helps accelerating things very nicely - plus the solution of resolving the Data to attain precise Info a short while later is very elegant