Dialed your LOD all the way down and lower your traffic.
5120x1440 monitor paired with a 2070super? You’re really pushing that card. What is your render scale set to?
Yeah, on that resolution it sounds pretty normal to get such FPS especially as you are on the lower end when it comes to RAM.
You could only try this to provably fix some issues, especially if you are on Win 11:
Also you can try to optimize your system a but, especially when it comes to Nvidia settings in NV control panel. There are some guides around on YT on that topic
What would you recommend more, either buy a RTX3080ti which is around 1‘300 USD (with alot of luck) or sell the 32:9 monitor & buy 2 G7 monitors which adds up to around the same…
It would help if you could post your Nvidia control panel settings, MSFS graphics settings, and also your expectations. This group can really help you dial it in from there.
I run 5760x1080 so I’m about a million pixels less running a 9900k and a 3080, overclocked to 5ghz hyperthreading disabled and get good to fair performance full ultra plus a few bits but any adding to the LOD past 200/200 hits both the GPU and or CPU depending on which one.