> > My system apparently favors D3D (Intel Core i5-4570, GTX 970, Win10 x64):
> >
> > mame64 pacman -nothrottle -str 30 -video d3d
> > Average speed: 4430.15% (29 seconds)
> >
> > mame64 pacman -nothrottle -str 30 -video opengl
> > Average speed: 197.96% (29 seconds)
> >
> > mame64 pacman -nothrottle -str 30 -video bgfx
> > Average speed: 573.56% (29 seconds)
> >
> > Ran twice with similar results. I remember nvidia GPUs once favored OpenGL, but I
> > guess that was awhile ago.
>
> I'm going to guess that in your graphics driver you have driver some internal setting
> set to forcibly sync video to signal and is not allowing you to unthrottle, even if
> MAME allows it. Check your settings via your card's desktop manager software and/or
> make sure vsync is off in MAME before retesting.
That would do it. I was going to reply something about the speed being 198%, but then I remembered my monitor refresh is set at 120Hz.
Update:
mame64 pacman -nothrottle -str 30 -video opengl
Average speed: 3713.51% (29 seconds)
D3D still a little faster.
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