1 hour ago, Bilal2104 said:

Thanks for the swift reply, i dont have any fps caps on. on the ground where i get ow fps its around 40 percent usage.

running ultra 1440p. would of though the 3080 would be at least used to 75 percent or higher. my CPU seems strong enough.

What's the max refresh rate on your display?  If you haven't already tried this try Vsync in MSFS.  If your display can do 120mHz refresh set Vsync to "20" in MSFS, which will yield a synced frame rate of 40.  You will not be able to maintain 40 w/ your system with complex planes in complex airports and I say this because we have essentially the same CPU and GPU save lesser VRAM on your GPU.  If max refresh is 60mHz, then set Vsync to 30 in MSFS to yield a frame rate of 30.  I discovered this in P3D after years of chasing higher frame rates when I learned on no uncertain terms the pathway to best fluidity in P3D or MSFS is thru use of Vsync in-sim--not thru NV Control Panel, or RTSS.   

19 hours ago, Noel said:

 

What's the max refresh rate on your display?  If you haven't already tried this try Vsync in MSFS.  If your display can do 120mHz refresh set Vsync to "20" in MSFS, which will yield a synced frame rate of 40.  You will not be able to maintain 40 w/ your system with complex planes in complex airports and I say this because we have essentially the same CPU and GPU save lesser VRAM on your GPU.  If max refresh is 60mHz, then set Vsync to 30 in MSFS to yield a frame rate of 30.  I discovered this in P3D after years of chasing higher frame rates when I learned on no uncertain terms the pathway to best fluidity in P3D or MSFS is thru use of Vsync in-sim--not thru NV Control Panel, or RTSS.   

It is interesting Noel that you mentioned it is better to use the in sim Vsync, I always used to use this but after SU8 I found my fps would bounce around and not stay consistent (at the time I was using vsync 30 on a 60Hz TV) That's when I changed to using Vsync on in NVCP and locking the frames using Riva. Mind you since those days I have gotten better at dialing the sim in with whatever hardware I am using. The biggest thing I find for fluidity no matter what fps you are trying to achieve is keeping the main thread timing lower than the gpu timing and also keeping the frame time as even as possible. If you can manage those three things with your own hardware you should get a fluid result. I did run 30fps for a good while and even set my TV to 30Hz and I could max every setting out and maintain this at any airport in any aircraft. I even pushed the render scale to 130 to keep the load on my gpu to around 70%. The only thing was that panning the camera was not as smooth as it is obviously at 60 fps. What I ended up doing was setting a custom refresh rate of 50Hz on my TV and then locking my fps to 50. I had to dial a couple of settings back but now I get all the benefits of running at 60 fps while giving my GPU some headroom.

The moral of this story is take the time to explore the options and see what works best for you, I only use my PC for my flight sim hobby and have always had great luck with stability, maybe because I only install software I need and I use the excellent addon linker to only load addons I actually need for each aircraft.