Faced the following problem. There are two working emulators on Dreamcast. One of them works terribly(fly), eternal lags, everything is slow as in jelly, but the controller settings work in it, and RetroArch works just as well. On the second (reicast), there are no problems with operability, but the controllers do not work, the buttons for the keyboard are also not saved, the emulator sets the keys by default, and there is also no way to call Retroarch.