Change priority denied?

I want to change the priority of Fortnite, but if I want to do it, it says' Access denied ''

I tried it with admin right, but still was not.

If you mean the priority in the Task Manager then changing it brings nothing.

That does not make your game faster. The priority is for processes in the background and thus has no effect on the game when it comes to the foreground.

Windows now protects itself pretty much from the user:

Read and understand. Then realize that one should better leave the resource sharing part to the operating system itself.

Maybe the first answer to this post will help you