[ohgodplsno]

>es, without vsync, idling in the main menu uses 100% GPU in task manager. GPU fan confirms this. Clearly a bug, as nothing in the menu looks to me to tax the GPU in even the slightest.

"I told my GPU to work as hard as possible and it did so! The game is so poorly optimised".

That's kind of the point of Vsync. Not rendering unnecessary frames.

[g_p]

Was meaning from the perspective of "I'm viewing a menu, this shouldn't max the GPU out". From another comment it does seem the video running in the background is being rendered in realtime, and maxing out the GPU.

I am not sure vsync would help in the menu, since the FPS is sitting below 60 in any case. Otherwise I'd agree with you that vsync should be turned on. It seems for FS that vsync is generally causing more issues than not at this point.