[SOLVED] What does the command "bcdedit /set tscsyncpolicy legacy" do?

Colif

Win 10 Master
Moderator
it seems to be part of a series of commands used to disable the High Precision Event Timer (HPET) and Dynamic ticks, at least on Asus rog boards.
Enable/disable HPET and Dynamic Ticks
Some users claim that forcing High Precision Event Timer (HPET) as a main timer and disabling dynamic ticks solve latency issues and audio distortion. Some users said its the other way around.

To try this workaround, run cmd.exe as administrator and type in:
bcdedit /set useplatformclock true
bcdedit /set tscsyncpolicy enhanced
bcdedit /set disabledynamictick yes

Force disable with:
bcdedit /set useplatformclock false
bcdedit /set tscsyncpolicy legacy
bcdedit /set disabledynamictick no


Restore to defaults:
bcdedit /deletevalue useplatformclock
bcdedit /deletevalue tscsyncpolicy
bcdedit /deletevalue disabledynamictick
https://rog.asus.com/forum/showthread.php?119682-How-to-reduce-stuttering-and-audio-distortion-in-Windows-10

I think TSC is a slow timer, and HPET is fast.

tscsyncpolicy [ Default | Legacy | Enhanced ] - Controls the times stamp counter synchronization policy. https://www.tweakhound.com/2014/01/30/timer-tweaks-benchmarked/
 

Colif

Win 10 Master
Moderator
it seems to be part of a series of commands used to disable the High Precision Event Timer (HPET) and Dynamic ticks, at least on Asus rog boards.
Enable/disable HPET and Dynamic Ticks
Some users claim that forcing High Precision Event Timer (HPET) as a main timer and disabling dynamic ticks solve latency issues and audio distortion. Some users said its the other way around.

To try this workaround, run cmd.exe as administrator and type in:
bcdedit /set useplatformclock true
bcdedit /set tscsyncpolicy enhanced
bcdedit /set disabledynamictick yes

Force disable with:
bcdedit /set useplatformclock false
bcdedit /set tscsyncpolicy legacy
bcdedit /set disabledynamictick no


Restore to defaults:
bcdedit /deletevalue useplatformclock
bcdedit /deletevalue tscsyncpolicy
bcdedit /deletevalue disabledynamictick
https://rog.asus.com/forum/showthread.php?119682-How-to-reduce-stuttering-and-audio-distortion-in-Windows-10

I think TSC is a slow timer, and HPET is fast.

tscsyncpolicy [ Default | Legacy | Enhanced ] - Controls the times stamp counter synchronization policy. https://www.tweakhound.com/2014/01/30/timer-tweaks-benchmarked/
 

ASK THE COMMUNITY

TRENDING THREADS