Yeah I know the Shield Portable is old. But I’ve been playing with it and I noticed one thing. With the PCSX-Rearmed core there is no controller input. All of the 12 other cores I have installed work fine. With PCSX-Rearmedt the games load fine with but it’s just that I can’t intereact with them.
This is on Retroarch build date 19 June 2020. Oh and the Shield Portable is rocking Android 4.4. Not sure what other information to give as I don’t post here much. I have googled around a good bit and not found anything useful though.