@Tarik94310, I read your topic 3 or 4 TV for A320 homecockpit?, just now and i think your stuck on 11k, which even a 3090ti will give problems for it has not enough vram to maintain, i think 4fps will be max on suchs graphicscard.
What i would do is in nvidia control panel or similair amd set your desktop in surround mode to cover
Desktop resolution select lower graphics to cover whole surround screen, set this screen resolution in sims fullscreen setting and press F11 to save and apply then exit the sim, and restart your pc.
Than open up usercfg.opt file (use search in taskbar to find location and rightclick select open up)
Here you can edit a with simple notepad manager.
Go to the secondary scaling settings in usercfg.opt. and set to 0.200000 then primary scaling set to 1.000000 or 1.200000 (anyway but start low) and save the file, start up the sim, and check your general settings, with dev mode on you can see how much fps, and much more info if it is working and running.
If still to choppy try lower the settings more.
Hope this will get you back to blue skies.