After la test windows 11 update i got a 50% fps drop .

Dear Radu Loghin!

Welcome to the Microsoft Community!

I read your post and I'm sorry to hear that your game performance was affected after the update. I'd like to get some specific information to help you resolve the issue.

Did you update directly to Windows 11 24H2 version, or just install some recent KB updates?

If you updated to 24H2 version:

Have you tried to use the "Recovery" option in Windows 11 "Settings" and select "Go back" to go back to the previous version? This option is usually available within 10 days after the update. Here are the steps:

a. Open "Settings".

b. Click "System" and select "Recovery".

c. Under "Recovery options", click "Go back".

d. Follow the on-screen instructions to complete the operation.

If it is a recent KB update:

Have you tried to uninstall the recent update in the "Update History" of Windows Update? Here are the steps:

a. Open "Settings".

b. Click and select "Windows Update".

c. On the "Windows Update" page, click "View update history".

d. In the update history, click "Uninstall updates", find the recent update, and click Uninstall.

Before doing any of the above, please make sure you have saved any important data, and understand that these operations may take some time to complete. After they are finished, check if your game's FPS is back to normal?

Please let me know how your operations turn out, or if you encounter any problems, we can continue to explore other possible solutions.

Thank you for your understanding and support! 

I wish you all the best.

Best regards,

Yang.Z - MSFT | Microsoft Community Support Specialist