After changing the scaling in Windows 11 to 150%, toolbar fonts become pixelated, and artifacts appear on buttons upon mouse hover. How can this be avoided?
Make sure Opus's DPI scaling isn't being overridden by Windows:
If that still doesn't fix it, try File > Exit Directory Opus, then re-launch it. If it looks correct then, it may mean the system DPI is changing after Opus starts.
If you have multiple monitors with different DPIs, Opus will render for the primary monitor's DPI.