Game speed issues

Hi guys,

I’ve got a problem with a few cores I’m using. The games are running really slowly, my refresh rate is at 59.9 but the estimated monitor framerate is 29.9. I’ve turned on Threaded Video and this has fixed a few cores. But on my NES core (nestopia) when I turn on Threaded Video the games run really fast.

Have I missed something somewhere?

Do you have Vsync swap interval set to 2?