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Not sure about heat, but when I start the game (even on the 'fantastic' setting) I get coil whine on my GPU. If you can, I'd recommend adding a frame limiter on the launcher with a default setting of 288 FPS (because 144Hz*2). A frame-counter would be nice, too.

Personally I never use Vsync because I'm worried about frame drops, I use 'Force Full Composition Pipeline' which basically system-wide Vsync (eliminating screen-tearing) that allows software to run at the highest FPS it can.