Windows 11 24H2 shows slower CPU performance benchmarks.

[Billybigun]

Windows 11 24H2, all versions after version 26100.1150, shows slower CPU performance benchmarks around 20% drop.
Is this Microsoft and Intel slowing my Core I9-14900KF to prevent degradation?
Any AMD CPU users seeing the same issue?
Regards

[Xarador]

I have a Ryzen 9 7950X3D and noticed a 8-12% performance drop with 24H2 as well. Seems like it's not just Intel. Have you found any solutions?

[Citron Vert™]

Same for me, processor score went from 23000 to 18000 after windows update....

[Citron Vert™]

I have an i9 14900kf problem since updating windows 24H2

[Billybigun]

Been trying loads of things:
https://answers.microsoft.com/en-us/windows/forum/windows_11-performance/problems-with-my-cpu-speed-and-performance-after/64902abc-b9fa-4376-a1a4-1de7bbb19ca4?messageId=069ee7be-af96-4424-9a21-279bdbd608e5

The only 100% reliable solution is to use Windows 11 24H2 26100.1150 any version after that has slower CPU performance.

[Billybigun]

HI,

After many hours of testing I managed to update to Windows 11 24H2 26100.1742 (the initial public release) with no CPU issue, using the following install order:

Download Win 11 24H2 26100.1150 from here:

https://uupdump.net/selectlang.php?id=c1da54e1-2cf1-4534-ba44-61251a6de142

Select language for Windows 11, version 24H2 (26100.1150) amd64 - UUP dump


1) Install or upgrade to Win 11 24H2 26100.1150 with no internet connected.
2) Pause all Windows update for now until a future fix that hopefully will be released sometime.
3) Install kb5041571 (Win 11 26100.1457)
4) Install kb5041865 (Win 11 26100.1591)
5) Install kb5043080 (Win 11 26100.1742)

6) Reboot and then connect the internet.


Any update after these cause the CPU issue again so keep the updates paused for now.

What this method does is bypass the install of kb5044030 which causes the CPU issue.

If you already have kb5044030 installed - uninstalling it does not fix the CPU issue !!


Regards

[Billybigun]

https://www.overclock.net/threads/24h2-cpu-score-drop-in-benchmarks-specifically-timespy-potential-fix.1812786/?post_id=29382816&nested_view=1&sortby=oldest#post-29382816


I can confirm the fix at the link above works OK after applying and rebooting on Windows 11 24H2 2161 (Latest)

Regards

[Billybigun]

Open CMD as administrator and paste the below, reboot.

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\8\2897279119"

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\8\2897279119" /v EnabledState /t REG_DWORD /d 00000001 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\8\2897279119" /v EnabledStateOptions /t REG_DWORD /d 00000000 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\8\2897279119" /v Variant /t REG_DWORD /d 00000000 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\8\2897279119" /v VariantPayload /t REG_DWORD /d 00000000 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\8\2897279119" /v VariantPayloadKind /t REG_DWORD /d 00000000 /f

[Baumwoll-Auge-Joe]

This does not work with build 26100.2454. Is there a workaround for the newest version?

[Kozary]

imagine using win11 and wanting performance

[seangrindz]

I’ve used windows 11, I’ve used expected slightly better gaming performance but after a few months. I believe that windows 10 is still superior than windows 11. Windows 10 has better market share than windows 11 even if 8 months of windows 10 left.

[hArDsTyLe2259]

I spent all day trying so many things so its nice to see im not crazy and its a windows problem. Really hope they fix it soon as im missing out on performance