Windows 10: Windows defender update made my notebook slower how to revert

Yesterday i was playing normally with 120 and 140, but at night an update occurred on windows defender and the games started to go with a terrible performance going to lower than 20 fps. Today while searching for the problem, I saw that the only thing that changed yesterday at night were two updates for windows defender, how to revert this.

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Windows 8 failure configuring updates and reverting

I agree 8 is awful! It's not for me though... I replaced a broken screen in a Win 8 laptop that was given to me and I am going to give it for free to someone that can't afford one so they can do homework at home. Yes I took it from 8 to 8.1 back on 10/09/2014. This is what I posted there...

"Great post! I found a similar one. I would like to point out that you may want to edit your OP...

1. Step 1 should read to disable AUTOMATIC updates, not disable manual updates.

2. KB2871398 should really read KB2871389

I would like to say that KB2917499 may also be needed as it was in my case. I also had to run the Windows Update Troubleshooter after installing those 2 updates. After these steps I was able to begin my 8.1 download from the Microsoft store. I don't know if it made a difference or not, but I also went into the Bios and disabled "Secure Boot."

It was a helpful post. Thanks!

 

Windows 8 failure configuring updates and reverting

Have you followed their advice? Install one update at a time and reboot after each one. It's a long process, but if that's the solution, and you want a working laptop, I see no other option.

As for a windows 8.1 iso, it's easy. I literally did this 2 weeks ago to my PC.
Create installation media for Windows

EDIT: Also, if you go direct to HP, they actually tell you to go into the BIOS, disabled "Secure boot" run the updates and reboot, and then turn "Secure boot" back on. Have you done as HP suggested?