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Go to windows power management and set it to balanced mode. Then go into nvidia control panel and look for the setting that allows you to set power management. Set it to balanced instead of maximum performance.
if you want it set to maximum performance for games then you’ll need to do it for each individual game rather than as a global setting.
This is what i did to fix it when i had this issue.
Check the apps on your taskbar, close one at a time and see which, if any, is causing it.