Hm. I tried the last 6 Cores now and also the last 3 MISTer files.
Its always stuttering.
Maybe it was always there in PAL 50hz and I always used US before, because my Sony PVM can display both.
But I decided to play it as it was in my country and renamed the file extension according to their region 2 weeks ago.
May it be possible, that the refresh rate for PAL is not 100% ?
Refresh rate: 59.92274 Hz (NTSC), 49.701459 Hz (PAL)
Regardless of that, great work. Thank you!
P. S. : ive played around with some games. Its also clearly visible in Mario 3 (R), I know its not an official game but its easy to move left and right and you can see the same stutter like in sonic. Its maybe easier to see there and seems like a fps screen refresh problem.
Two beer or not two beer? - Shakesbeer.