No, you should absolutely NOT let GF Experience optimize your settings ever, in no game. It messes things up.
What I was asking is your settings in nVIDIA Control Panel, not the ones from MSFS as read out by GF Experience.
Did you delete your shaders after switching to the novel nVIDIA card? If not, this is an absolute must.
Iām afraid thatās true.
The buzz word is ābalanceā.
Though your 4080 is a nice upgrade, if the other components are untouched the GPU will disappoint most likely.
Almost a year ago I decided to order a bunch of parts in order to build a nice MSFS PC
Ingredients: Intel i5 13600K, RTX 4070ti, 32 GB/DDR5/5200, Z790+wifi MB, 1000Watt platinum PSU, 32" Iiama 4k/UHD monitor, TrackIr 5.
It has set me back roughly ā¬2600 but this rig runs fluid like molten butter.
Iām confident this system will eat MSFS2024 for breakfast also.
Hereās mine (to give OP a reference.) I welcome any other memberās opinion on anything I should set differently.
Note that I have both āAnisotropic Filteringā and āLow Latency Modeā OFF in the sim. Itās better to let the nVidia driver handle that.
Canāt see much wrong personally with your settings here. They look good to me at least.
The only question I would have is should threaded optimisation be set to ON or AUTO? Genuinely donāt know or even if it would make any difference.
Have you tried turning on frame generation?
Thatās a good question. But my feeling is that we need to help him improve his non-FG performance first.
What plane?
Use DX12 and Turn on Frame Generation (DX12 is needed for frame generation to work). This will instantly double your fps. If Frame Gen is greyed out in MSFS then make sure HAGS (Hardware accelerated gps scheduling) is enabled in your windows settings. Do these things and your sim experience will improve.
Sorry, but my windows is in polish language, I donāt know if thatās of any help. 
But maybe I could have a look at your settings there to compare? Or these shaders are the main thing I should switch it off there? Thanks a lot.
You donāt want to turn shaders OFF. Mine is set to 100GB. But others recommend āUnlimited.ā
You do want to clear the shaders, following the procedure I posted above.
What plane are you flying over Barcelona?
the one, that is attached to this flight, I believe itās da40?
Nor do I. āONā is what I saw in an optimzation video. But thatās just someoneās opinion, I think.
OK, thanks. I previously posted my results in both the Bonanza and the FSR500.
Iāll do a flight in the DA-40 so we have a true comparison.
Did you set your general settings to the values I recommended for a baseline test?
Theyāre what Iām using for my tests.
My system is very different than yours, but just for reference Iām at about 50 fps with TLOD and OLOD at 100, multiplayer on, most graphics settings high/ultra (clouds at ultra which is the biggest graphics killer) and running ultra-wide 3440x1440p. i5-13600K at 5.4GHz and AMD RX 6800XT.
Thatās a good metric for OP. Even though your system is different from OPās (as is mine) I think the relative performance should be reasonably close to what weāre getting.
Itās not like he has an i5-2300 and an RTX 1080. But his performance seems closer to that than what I would expect from his AMD 5900 and RTX 4080.
Ok, so the test has been made with all the instructions.
Also that 'gpu scheduling" option in windows was off, now itās on.
So with Cessna 172 over Sahara dessert I get thisā¦
It was OFF and HAGS was also off I donāt know why, cause itās WIN11. Thank you for this hint, I wish I doubled it though, hahaā¦ But there is improvement for sure ! 
Since you have some GPU headroom, I would guess you could probably turn off DLSS and pretty much maintain that FPS, getting some improved visuals.
I had a 5900x paired with a AMD RX6800 and I had no problems running 4k HDR (using FSR2) locked at 40fps (120Hz TV locked at 33% so 40fps). Your 12 core 5900x is actually better in almost every respect over the 5800x3d except for the 3d cache. You should be getting 60-70+fps without frame gen easy with a 5900x + 4080S at 1440p (it looks like you are almost there).
In the short term continuing to tweak your Nvidia settings will definitely get you the most bang for your buck. My opinion with upgrading to a 5800x3d would be that you will not get a significant enough improvement and your money would be better spent on an AM5 based 7800x3d upgrade.
Below is a screen shot when I had the 5900x + RX 6800. Notice itās limited by the GPU and the mainthread is not an issue. Your 4080S will shift your PC to be CPU limited but not by an overwhelming amount.
