FPS drop in menu after playing few games

[PsyhiX69]

Product: Apex Legends
Platform:Steam-PC
Please specify your platform model. PC
AMD or Nvidia Model Number RX 6800 XT
Enter RAM memory size in GB 16
What is your gamertag/PSN ID/EA Account name? Psyhix69
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Are you using any software with an overlay? Yes
If yes, can you list them here? Msi Afterburner, AMD Adrenalin
If you disable this software, does that have any effect? No
Which Legend were you playing (if applicable)? Loba
Which Legends were your squad mates using (if applicable)?
Where did the issue occur? In the lobby (waiting area before the match)
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. don't apply
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. don't apply
Did your squad mates also experience the issue? I don't know
How many matches had you played in a row before the issue occurred? few matchs
When did this happen? (dd.mm.yy hh:mm) 2021/11/12
How often does the bug occur? Every time (100%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? After playing few matches fps drop in menu. This is happening gradually, first from 141 to 120, then further 100, 80, and 60...
What should be happening instead? I should have constant fps 141
Steps: How can we find the bug ourselves? Play few matches. You can play and disconnect. This will trigger it faster.

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Attaching dxdiag.

Screenshot (see fps counter):

[PsyhiX69]

So when this will be fixed? You actually can't play continuously with this. I am forced to restart the game every few matches!

The lowest I had is... 36fps in menu. Laughable.

[XHelperZ]

Okay I think I know what is causing this issue, are you using multiple monitors?

If so, do they have the same refresh rate or is that also different?

EDIT:

I've noticed that you are using Windows 11, which isn't officially supported as far I'm aware.

Do note that this could be the issue and that there is most likely no proper solution to this.

My expertise does not extend to this OS, nor (as far I am aware) does it for official support agents.

Hopefully, you can get help from those familiar with this OS, though I doubt there is much help you can get here for Windows 11.

I've also seen that you've already been going around with some other issues, probably the issue is on Microsoft's side.

Honestly, I'm not that knowledgeable about the OS in depth so maybe it just operates somewhat the same as Win10, though I can assume you weren't encountering this issue after upgrading?

[PsyhiX69]

I am using only one monitor.

This is happening on both windows 10 and 11. It makes not difference.

You can speed up this bug by going into the character selection and disconnect afterwards. Do this multiple times and the fps will drop by some amount.