Older UCS Manager uses Java application. The UI fonts could be extremely small on high DPI screen. The fix is:
- Go to “C:Program Files (x86)Javajre1.8.0_171bin“.
- Go to “Properties” of “jp2launcher.exe“.
- “Compatibility” tab -> “Change high DPI settings“.
- Check “Override high DPI scaling behavior….“.
- Select “System (Enhanced)” or “System“.