Happens in VR. When it's SteamVR rendering the loading screen instead of VRC, it seems like there's no frame rate cap and it just makes GPU render hundreds of frames for no reason, causing extra noise and heat in my case when I try to otherwise cap my power usage and heat produced by the GPU.
Combined with the other issue of VRC getting stuck in those SteamVR loading screens, this uncapped rendering may go for a while when unnoticed.

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