So with v12 comes the new menu... I don't know if it's only me, but I have high GPU usage in game menu.
I played v12 now for 3-4 days and I had high GPU usage in menu, but when I connected to a game server the GPU usage dropped and I could play with no problems...
I tried today and the same thing happened... menu -> High usage... BUT this time when I connected to a game server the usage didn't drop...