Running UE5 parallel to a game (V-Tubing)

Hello there,

this question may be more a GPU related problem than a problem with UE, but maybe someone can help me anyways.

I want to use a packaged instance of UE5 to animate a character with live link face for V-Tubing. So far that works fine. But when I run e.g. a game in parallel, the game occupies close to 100% of my GPU, so the instance of UE5 begins to stutter or even freeze.

That is why I was wondering if there is a method to limit the GPU usage of certain applications or (even better) make the instance of UE5 always occupy some GPU capacity (e.g. 10-20%)?

Thanks in advance.