All I know is I have the SSF_012_BETA_R4! This EMU IS FANTASTIC, I HAVE HAD THIS FOR 5 OR 6 YEARS AND HAVE MADE 100 games burned to cd's and I love it!!!!!!!!!!!!!! Like everything else I guess it depends on your PC. I have an E-Machines pc I bought back in 2010, it's had a few fixes but better now than then! Dual core, 2.70ghz cpu it kicks ASS!!!! It sounds like I was just lucky this EMU rocks for sure.You need all the bios, I can play us, pal, or Japan games! I had the real SATURN around 1995 and loved it for sure. Try this EMU, I just tried the yabause for 64bit win10, FORGET IT!!!!!!!!!!!!!!! GOOD LUCK. EMAIL ME IF YOU HAVE QUESTIONS, I will try to help!!!!!
