on recalbox.conf change this line global.videomode=CEA 4 HDMI to global.videomode=default
------------ H - HERE IT IS - GLOBAL EMULATOR CONFIGURATION ------------
The global value will be used for all emulators, except if the value
is redefined in the emulator
Set game resolution for emulators
select your mode from the command : tvservice -m [MODE]
CEA 5 HDMI : 1920x1080 @ 60Hz 16:9, clock:74MHz interlaced
CEA 4 HDMI : 1280x720 @ 60Hz 16:9, clock:74MHz progressive
use 'default' for using the default resolution
(string)
global.videomode=CEA 4 HDMI