I have the same problem.
If I set V-Sync to 60FPS it resolves somewhat but if I turn it off when the frame rate goes above 60fps it gets really choppy again. This is a really frustrating issue to have. I wish we could find a fix for it.
Ryzen 2700x
Radeon VII
16GB Ram
Windows 10
English
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I have the same thing going on. Vsync helps some but its inconsistent and gets worse over time.