You have to manually limit the fps. I have an NVIDIA card and use
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. It's actually a very useful tool to have since many UNITY games have this problem. I don't know a thing about programming but apparently unity games use all your available hardware and run with limitless fps if there is no fps limit. It should actually be the dev's job to ensure that the game runs somewhat decently but since most erotic game devs are amateurs at best you just have to limit it yourself.