The test results you have selected are very old and may not represent the current state of DXGL.
Selected Test Results (selected in 'Test Results' table below)
Works perfectly out of the box.
What does not
Changing resolutions or using scaling modes in DXGL may cause GUI corruption. Clear that by returning to the game.
For best compatibility, set zsnesw.exe to "Change desktop resolution" in DXGL config.