This is the main rig we use for development:
Intel Core i7-7700K 4.20 GHz 16 Gb Ram
nVidia Geforce GTX 1070 8 Gb Ram
No special gadgets I think.
Oh.. And it runs like a charm. And not much more will be added for release version.
The GPU cooling fans really gets going, however, when docking the new shuttle with the new detailed ISS using shadow volumes, but no big problem in performance.
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