Hello orangefiestaware, welcome to the Microsoft community, I'll be happy to help you today;
I understand that the "High Performance" power plan is completely gone;
What exactly is the model and manufacturer of your graphics card?
What exactly is your PC model and manufacturer?
If it's a desktop, what exactly is the model and manufacturer of the motherboard?
Before answering the question I suggest you try the following;
Check if you are updated with the latest version of Windows 10;
Press Windows key + i and go to Update and Security;
Click Check for updates and do ALL pending updates;
Run System File Checker;
Click on the Windows search bar and type: CMD
The search result for CMD (Command Prompt) will be displayed, click Run as administrator;
Copy and paste the commands below by pressing Enter after typing each command line:
Sfc /ScanNow
DISM /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-image /RestoreHealth
Create a new power plan;
Access the Control Panel and click on System and Security;
Click Power Options;
Click on Create a power plan in the menu on the left of the screen;
Set the desired power plan and click Next;
Configure sleep and hibernation, then click Create;
That should fix the problem;
Hope this helps, see you soon!