I've noticed some frame judder (skipping, glitching) with our Hisense 65M7000. I've taken videos of the issue from an Xbox One X:
Normal speed
Slow motion (240fps)
The above video was taken using HDMI 3 with it being in PC/Game mode. When I unplugged from HDMI3 and connected to HDMI4 (also in PC/Game Mode), the issue went away. When I plugged it back into HDMI3, the issue wasn't there anymore so it seems like reconnecting the HDMI cable fixes it somehow. I've also noticed the issue sometimes when streaming sports coverage in Chrome from a Macbook (connected via HDMI). Using an alternative HDMI cable doesn't seem to resolve it.
I'm assuming the Xbox is outputting in 4K/60Hz, and I've ticked the boxes to allow 50Hz or 24Hz if needed (unticking the boxes didn't resolve the issue).
Has anyone had any similar issues? Would it be an issue with the TV hardware itself or just an incompatibility issue?