100% CPU usage?

Is there any reason why I’m hitting 100% CPU usage with I9-10900K 10 core processor? Any help would be appreciated.

What are you trying to do?

Thank you for your response. I have games like Insurgency and Squad. Just trying to load an example map to try it, it takes for ever, My trying to do some level design and it takes for ever. I don’t ever remember it being like this.