Post count: 42

Last post here and I’ll call it resolved. Running through the non-libretro core fixed the resolution issues as stated.

USB controller configuration was set within the emulator itself. While a rom is running, press TAB on a keyboard to get to the in-emulator menu and you can set global properties from there. The exit emulator hotkey is labeled “UI Cancel” if anyone is wondering. All of my buttons were identified without any additional configuration.