Surface laptop 5 TPL Speed Shift ignored?

[Sl5]

Hi all,

Recent four months Throttlestop ignores TPL speedshift limit. After a while of gaming/benchmarking i think windows is overwriting the TPL Speed Shift limit.

Im on Windows 11 24H2 (latest as of now)

What i've tried:
- Using Performance power plan
- Reset .ini Throttlestop and restart
- Reinstall windows 11 from scratch

How can i fix this?

 

[unclewebb]

Windows 11 24H2

ThrottleStop has not changed how it handles the Speed Shift register. It is likely that Windows 11 24H2 has changed how Windows programs the Speed Shift register. There is nothing I can do about that.

If I had your computer I would lower the turbo power limits. That is the best control method. In the MSR Power Limits Control section I would set PL1 and PL2 to about 25W, I would check both Clamp boxes and I would clear the Sync MMIO box. It is not necessary to check Sync MMIO when you have checked the MMIO Lock box.

If the BIOS has not locked the PROCHOT Offset register, I would set that to 5 or less to raise the thermal throttling temperature a few degrees. You will need to reboot to change any items that are presently locked. There is not much else you can do. Microsoft has taken over control of Speed Shift.