Genesis Plus GX shader issues

When I enable ntsc-320px shaders on this core, the performance suffers. This is strange because none of the other cores have this problem.

Is there a way to resolve this?

Try using the ntsc-adaptive shader instead. It unrolls a loop in the 320px NTSC shaders that is murder on certain GPUs for some reason.

I should also note that before updating the cores, eveything was working fine.

I don’t see any commits to that core that are likely to cause any change in performance there:

Switching the audio driver to xaudio fixed the issue.

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