Yeah, it got me doubting myself at first too, since the speed difference is not too extreme, but as soon as I saw the framerate I knew something was off. For now the fork I linked should work fine, If I remember correctly it ran at a stable 30 fps with wide screen enabled and 720p resolution without needing to overclock, then I deleted it and got the fork that you linked, which is more up to date and has better performance, but runs too fast.
