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- PERFINCTHRESHOLD is a hidden setting, so I am not sure its default value. It maybe different depending on the power plans.
- You can resore the default settings by below methods:
Settings > Power & sleep > Additional power settings > choose your power pan and click "Change plan settings" > Restore default settings for this plan
Run "control.exe powercfg.cpl,,3" > Restore plan defaults
Please akso check the link of Known Windows Power Subsystem GUIDs for your reference.
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