When a viewportFrame is inside of a canvasGroup, it will have difficulties updating. Sometimes it will not update at all when the part moves, sometimes it takes 2-4 seconds.
To replicate:
- put a viewportFrame inside of a canvasFrame.
- Put a part inside the viewportFrame .
MRE where the part should be smoothly spinning:
viewportCanvasMRE.rbxl (58.0 KB)