Turning on HD switches the default core/emulators.

You have 2 options:

Turn on HD mode for all games. Go into each game that you don't want HD, and set it back to the default core/emulator. Leave HD off, and select the emulator that supports HD per game.

See:
https://wiki.recalbox.com/en/basic-usage/features/hd-and-widescreen-modes

Another pieces of information for ODROID GO SUPER :

headset might give strange behavior : https://forum.recalbox.com/topic/27726/bad-sound-quality-if-console-started-without-headset Putting the audio resampling quality to the lowest may improve audio of videos in the game list ?