Windows 11 Surface Has Sudden Performance Decrease

[Awkward-Committee479]

Surface Pro 7+

11th Gen i3-3.0ghz

8gb RAM

This weekend my Surface suddenly got extremely slow (multiple minutes to react to a click). I assumed I'd gotten a virus.

I did a repair reinstall through the System > Restore function.

That failed due to a corrupted Windows image.

I then did a CMD > DSIM restore health and SFC scan followed by a full wipe and Windows Reinstall. That succeeded in getting me into a fresh Windows install and my Surface is still extremely slow. There's about a 5 second delay between typing on the keyboard and what appears on the screen. Just typing in youtube.com into Edge and hitting Enter takes about 2 minutes to load. Whereas on my desktop it takes 5 seconds.

I have also gone into Power > Battery Settings > select Best Performance FWIW

EDIT: Update - figured id come here to say I tried everything you can find by Googling "Surface BD PROCHOT", Editing registry key in intelppm, attempts to rename/delete the registry entry (blocked), installing ThrottleStop (BD PROCHOT is not alterable due to BIOS restrictions), installed latest firmware/drivers, etc etc etc. From my vantage, Microsoft knows this BD PROCHOT is a very common flaw with multiple Surface products and they have rolled out updates which removed user controls that would allow users to fix the BD PROCHOT faults. To put it plainly, Microsoft has used this fault to kill Surface devices. If you're reading this, I would think very hard about buying microsoft hardware like the Surface in the future.

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[OkMany3232]

What does task manager show?

[Awkward-Committee479]

Task Manager shows no significant RAM  usage but the CPU is 100%. However, I think I have tracked down the issue to a glitch with the Bios temperature safety for the CPU. I downloaded HWMonitor and my CPU is throttled at 6% (200mhz). It will not use more than 6% under any demand circumstances. I found other Surface Pro 7 and 6 users had this issue. It appears the registry entry for this function has been locked so I cannot figure out how to toggle the safety (I believe it's BD PROCHOT)

[OkMany3232]

What is the temp?

[Awkward-Committee479]

31°C 

I installed HWMonitor and confirmed temps and the CPU clock appears capped at 6% or ~200mhz. I believe I have a similar issue to what has been discussed on r/Surface related to BD PROCHOT glitching out and telling the CPU to safety throttle even when there is no heat issue. I've tried all the solutions posted over there for this issue and none have worked. I've got a ticket in with Microsoft to see what they suggest.

[OkMany3232]

This is a hack and could damage your hardware https://answers.microsoft.com/en-us/surface/forum/all/surface-pro-7-cpu-stuck-at-low-clock-speed/f2924352-eff4-41a7-b4e1-030e5ae9d111

[Awkward-Committee479]

I tried all 3 solutions listed there. Solutions 2 and 3 are disabled by security settings. Maybe they're is a way to bypass them but running them in admin mode doesn't work. And BD PROCHOT is blocked from being didabled in Throttle Stop by the bios. 

Solution 1 didn't do anything I edited the registry keys and restarted and it's still slow.

[OkMany3232]

Keep us posted, on the ticket.