I have a multiple 4k monitor array consisting of: - 2x 27" 4k asus monitors, - 32" asus 4k monitor - 16" macbook pro - Ipad pro(as external display) When I use all of these products together everything acts as is, the resolution mirrors that on the Display settings on both OSX and on Windows 11. I only use coherence mode. However I recently purchased an additional 1080P monitor to go along with this array but when connected it changes the default resolution(in Windows only) and slices it in half. So when I use apps in Windows all my programs are not scaled properly, and even when I try to change the "scaling" tab to the lowest it can go, the resolution is still too big and just isnt good. Not as clear and fuzzy edges, not crisp. When I try to manually adjust the "display resolution" to match that of OSX it automatically boots me out of coherence mode. I have tested with both the ipad on and disconnected while the 1080p monitor is connected, and still the same issue. It appears to only happen when this new 1080p monitor is connected. When I disconnect the 1080p monitor everything funcitons as normal with both the ipad connected and disconnected.
It sounds like your graphics card might be struggling to handle the mixed resolutions. Windows might be forcing scaling to accommodate the 1080p monitor. Try these options: Set Different Resolutions: See if you can set independent resolutions for each monitor in Windows display settings. This might allow you to keep the 4K monitors at their native resolution while adjusting the 1080p monitor. Check Graphics Card Settings: Your graphics card software might have options for multi-monitor setups and scaling. Look for settings related to mixed resolutions and see if you can adjust them for better compatibility. Hopefully one of these options helps!
