1080ti constantly at 84 degrees while playing and in menus

You have a very good card there and your monitor is 144hz are you playing the game with vsync off?

If so you can try this command within the game's console : gametime.maxvariablefps 150

This way you will limit your fps up to 150 without adding any input lag! So you can save some of the wasting power and your temps will come down a little more 😉