Anthony Pesch is been working really hard to give the most low spec emulator to run on for all windows, mac and linux you can find the emulator located here
https://redream.io/the emulator hub and controller setting
click the spoiler to see the images demonstration
this just testing not trying to beat the game or show off. testing the full capability for the emulator. there some stuff need to be worked on but Anthony Pesch is working really hard to give us he full experiences for the sega dreamcast emulator. they are some game are 80% playable but not fully complete. the emulator still is a working in progress in development. so dont cry about it. Just help the guy out with your feedback
you can go to his gitlab section make your report there
https://gitlab.com/inolen/redream/issues