I have 3 screens: 2x 3840x2160 and 1x 1920x1080. The 4k screens are scaled at 200% while the FHD screen is at 100%. On the 4K screens, the cursor is just fine, but when moving to the FHD screen, the cursor jumps sizes while moving it. If I keep the cursor still, the size is correct. It's quite distracting and jarring, too.