I have a recently purchased Streaming Stick+ (my first Roku device), and I'm been finding an irritating problem with a subtle (but very noticeable) video stutter.
I have the latest version as far as I know (9.3.0). I've already tried all of the recommended solutions I could find on this forum (change display and audio settings, power down and restart the Roku, etc.), without success. The fact that the problem occurs only after a rewind/restart suggests a problem with the Roku, but I'm open to other troubleshooting ideas. It's irritating enough that I may have to return it if a fix is unavailable.
Did you ever resolve your issue? I'm curious about what brand/model of tv are/were you having issues with? I just noticed my roku stick (3800X) on a tcl series 4 tv does the same thing...only on netflix. I tried other roku stick versions and other TVs, they all work fine, it is just this specific stick on the tcl tv.