2> way SOCD cleaning causes problems?

[curious-questions]

I'm trying to make it so that when I press S the A / D key takes priority.

I tried to add them all to the same group

[Group]
key1=65
key2=68
key3=83
key4=87

and while that works; if I press any 2 of A/D(/W) at the same time as S (common when you're tapping them fast) it just forgets S is held. The whole benefit of SOCD cleaning is holding one key while tapping the other(s).

I've also tried to separate the groups but it complains about "duplicates"; "The config file contain duplicate keys. Please review the setup".

Already in config.cfg:

[Group]
key1=65
key2=68

[Group]
key3=83
key4=87

Added to .cfg:

[Group]
key1=65
key3=83 

[Group]
key2=68
key3=83

I want to retain the standard A / D + W / S SOCD cleaning while having my required functionality working properly:

I'm trying to make it so that when I press S the A / D key takes priority.

Thank you. It's for Street Fighter 6 by the way.