He found that it’s trees in maps causing the stuttering. Since patch 2.0 you are able to customize graphics and change the trees to HD while other graphics such as ground is SD. Seems to be an issue with how trees are being rendered since patch 2.0. I have intel not amd and I have same issue. Most maps are unplayable since patch 2.0 due to this new microstuttering which is noticeable when you scroll/move the camera view.
Only Blizzard can fix this I’ve tried everything for my own custom maps. My bigger maps that have more trees and units microstutter HEAVILY compared to my smaller maps with less trees and units.