Well, the title.
I want to be able to game and mine at the same time.
Currently, mining is grabbing a lot of power so even crappy games lag. But since I have 1080Ti, I could just set maybe 70% to mining and 30% to gaming and it will still offer plenty of power to game.
It depends on which mining software you are using. Many versions of CCMiner allow you to set an intensity parameter that determines how much it will utilize the GPU. The intensity level varies per algorthm, but most of the time the default levels are between 19 and 24. You could try a custom intensity around 10 and see how that affects your gaming performance.