Help! Trying to set up mini pc in arcade cab

Hi

I have a mini pc which I want to set up in an already built arcade cab with two joy sticks and 6 buttons for two player. I want to also be able to use an 8bit do controller. When I try to map to retroarch via system it won’t save and the controls are messed up.

Hello

Can you please precise which encoder card you're using.
Also, did you set your 8bitDo controller as Xinput ? It's easier, no need to remap nothing.