> I have the same weird throttling issue with D3D and OpenGL:
>
> mame64 pacman -nothrottle -str 30 -video d3d
> Average speed: 99.00% (29 seconds)
>
> mame64 pacman -nothrottle -str 30 -video opengl
> Average speed: 99.00% (29 seconds)
>
> mame64 pacman -nothrottle -str 30 -video bgfx
> Average speed: 849.29% (29 seconds)
>
> I don't understand where it's coming from, because in my mame.ini both waitvsync and
> syncrefresh are set to 0.
>
> Any ideas?
Check Tafoid's response to me- in my case, at least for OpenGL since D3D was fine for me, it was in the "Manage 3D Settings" section of the NVIDIA Control Panel software. I just changed Vertical Sync from "use the 3D application setting" to "off" and clicked "Apply." Problem solved.
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