@saku00 so I tried some Naomi 2 games on the standalone flycast on a pi4 2gb. Good news and bad.

They boot. But they're absolute slide shows. 4-7 FPS at best.

https://ibb.co/fvXsjwn - you can see the FPS counter in the corner. So I would say Naomi2 is a no for a pi4. Not surprising given they're basically PS2/GameCube/Xbox graphic games. Maybe a pi5 or 6 in a few years will be able to handle that.

@DTEAM @barbudreadmon It's cmitu's wip script. It won't directly load games right now. You'll have to do it from inside flycast. Ymmv.. I was using mesa version 21.3.8 https://github.com/cmitu/RetroPie-Setup/tree/flycast-standalone

Side note..after installing the latest mesa the pi4 can handle (21.3.8) on 64bit Bullseye lite and compiled retroarch and lr-flycast with vulkan, I don't get any more major frame drops in sonic adventure 2's first level. It still hovers at around 59fps and I have no idea what further compiling optimizations can be done.