Just picked up an R7. When moving or panning around to desired composition, both the display or EVF will freeze / stutter, similar to how a video game would drop in FPS. Pretty self explanatory why this is an issue.
There was a firmware release about a week ago, the first of many I am sure. May want to see if that helps. https://www.usa.canon.com/internet/...s/mirrorless/eos-r7?subtab=downloads-firmware