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Windows ultimate low latency / DPC tweak



Commands:
1. Enable Ultimate Performance Power Plan
powercfg -duplicatescheme e9a42b02-d5df-448d-aa00-03f14749eb61

2. Disable IDLE power saving on CPU
powercfg.exe /setacvalueindex SCHEME_CURRENT SUB_PROCESSOR IdleDisable 1
powercfg.exe /setactive SCHEME_CURRENT

3. (optional) lock all Driver DPC to one core
reg add “HKLMSystemCurrentControlSetControlSession Managerkernel” /v ThreadDpcEnable /t REG_DWORD /f /d 0