https://retropie.org.uk/docs/Atari-800-and-5200/
Says to add
retroarch-core-options.cfg
\\pi4\configs\atari5200
Must have these lines in it
atari800_artifacting = "enabled"
atari800_cassboot = "disabled"
atari800_internalbasic = "disabled"
atari800_keyboard = "poll"
atari800_ntscpal = "NTSC"
atari800_opt1 = "disabled"
atari800_opt2 = "disabled"
atari800_resolution = "336x240"
atari800_sioaccel = "enabled"
atari800_system = "5200"
Not in the global one here.
\\PiBoyDMG\configs\all
Thing is even after I did this the global options got added to \\PiBoyDMG\configs\all
Pretty sure
\\pi4\configs\atari5200\retroarch-core-options.cfg
this is not getting looked at.
So Instead we could try using
\\pi4\configs\atari5200\retroarch.cfg
On second thought why bother.
Who cares. Just use the global ones.