Hey Everyone, I found a solution for this problem.
Looks like Windows 11 uses more RAM than Windows 10, because of the Windows 11 beautiful graphics and etc + Windows 11 has a lot of app which run in background (You can't shut them off)
So I decided to downgrade to Windows 10 and I did.
Now Battlefield V works perfectly without any problem, I get 60 FPS in highest graphic settings.
So the solution is:
If you have a normal PC Spec like me DON'T UPGRADE TO WINDOWS 11
because Windows 11 makes your pc weak (I'm not saying Windows 11 is a bad OS, I'm just saying for normal PCs if you want to play more games don't upgrade to Windows 11)
So just stick with Windows 10 and if you like beautiful graphics use some tools in the internet to do that.
or just upgrade your PC specially your RAM 16Gb RAM would be good, I think.
so good luck everybody, Have a great life.
My regards to EA.