@Dragu On my side, I've just tested 'scaler=none' and it's really better ! Thanks too ... What DosBox still needs to be 100% usable on Recalbox is a virtual (on-screen) keyboard. I've searched a bit but I found no easy solution ...

@ratte dreamcast isn’t available on anything lower than rpi3, so these are pointless: gpu_mem_256=128 gpu_mem_512=128 Regarding gpu_mem_1024=128 And the pi3... as mention before, the WSOD can (still) be a problem, but also some arcade games woul not even start with that setting or would not have sound either.