Hey phasermaniac, i only have Ninja warriors once again and it runs as smooth as butter on my 2 pc's. Core i7 9900k, 1080Ti, 16gb., win 10 20H2, 1080p, Yuzu EA1360. Didn't have much to do to make it work... pretty easy to emulate now. Can't say much... Maybe it's a monitor related problem or your gfx card. Hard to say.