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Example removing the skybox from an area in the OC a lot less is shown and FPS is a higher 90-96FPS.
No Skybox but with Skybox 135M range
These settings mimic the skybox (+90M, so 135M total) but with no sky has less "covered by fog", while the same geometry shows up. However of course there is popin on creatures etc. and the same FPS as the Skybox 45 + 90 example.
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