I can‘t get high FPS with my setup at all - so I like to ask you people with similar components: What FPS do you get and with what settings inside Flight Sim?
3840 x 1600
i7 8700K @ 4,4 GHz
32 GB RAM @ 3200 MHz
SSDs
3080 TI
Win10
That’s not 4K, it’s less. Roughly 2 million pixels less to be precise. You should be getting anything between 40-60 with that setup. Depending on factors. Also, with that setup, Turn your cockpit refresh to high.
I know it is a pain but maybe post your NVidia settings as well.
Upon review of your settings you are set up quite nicely to easily lock FPS at 30fps and should be hitting 45+ easily without Vsync. There must be something else going on that we aren’t seeing.
I found the problem. Your settings are all corrupted. They look like they are in some other language.
My German is a bit weak but I am not seeing anything jump out at me here. You have DSR disabled. That was my first concern.
You don’t have anything running in the background do you?