<p></p>
<p>Getting off-topic from the original problem...</p>
<blockquote>
<p>The majority of CPU time is spent converting from the window color space to the screen color space. Using OpenGL (and I assume Metal too) bypasses this color space conversion, so I assume that gfx_sdl2 would use much less CPU than gfx_sdl on Mac.</p>
</blockquote>
<p>Ravancloak recently complained that the OHR runs slowly on her old Mac. We all shrugged and blamed it on the Mac, but she just commented that switching to gfx_sdl2 fixes the slowness.</p>

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