MSFS 2024 Low FPS on RTX 3080

PC specs are

  • Intel Core i5 12600K
  • Asus TUF Gaming RTX 3080 10GB OC
  • Corsair 32GB DDR4
  • Samsung 1TB 980 Pro SSD
  • Windows 11
  • Display is 75" TV with 3840 x 2160 @60Hz

MSFS 2020 works perfectly fine in 3840 x 2160.
MSFS 2024 runs at 10-20 fps on “Low” Preset and 50fps with FSR3 while rendering at 192 0 x 1080, which doesn’t feel like 50fps. TAA is turned on. DLSS looks horrible.
MSFS 2024 eats up VRAM immediately and lowering settings doesn’t help at all.

easyjetsimpilot on Youtube can run MSFS 2024 perfectly well on 1920 x 1080 with RTX 3060.
I chose the exact settings, at 1920 x 1080 and still get 18-20 fps at most with TAA and 30fps with TAA + FSR3.

Pretty sure I am doing something wrong. Can you wonderful people help?

After each setup, you need to restart the game, otherwise it will become increasingly laggy.

I have a 5950/3090/64GB/win 11 PC, and am using DLSS performance, which IMO looks fine at 4K output (on my 48" OLED TV).
FS2024 is a different beast frmo FS2020 for sure. Currently I am just aiming for a steady FPS say 30FPS and then using frame gen (either internal FSR or external lossless scaling app) to push that to 60FPS (x2) 90FPS (x3).
I have TLOD at 150 (120 if using airliners), OLOD 150, clouds : Ultra, quite a lot of settings (shadows, textures etc) from ultra to high. All traffic to OFF except road traffic at low. Fauna to OFF (it reportedly hits CPU cycles and FPS).
I have my TV RR at 120Hz, with a target framerate of 30FPS in sim (you can lock that to a max now in SU3 beta) and then a 2x FG to target 60FPS. All works reasonably well.

I’m also using latest NVidia drivers 576.52, with ‘latest’ DLSS preset and profile ‘K’ set in the NVidia App. I’ve also enabled R(e)bar as it was off as default for my 3090. The 30 series cards needs VBIOS update as well as a motherboard bios update in order to enable Rebar. Check NVCP → System Info to see if Rebar is enabled/disable on your system. If you have rebar enabled, then use NVidia profile inspector to select the FS2024 option for it. It reportedly uses less VRAM tha the default one. People with VRAM issues have been reporting performance/FPS issues in FS2024 from SU2 beta onwards and have generally been disabling Rebar as a quick fix, bu the FS2024 profile seems to be an option too.

I use an RTX3080 to which 3 32" monitors are connected, and flying is no problem. The only special message I receive is that the 10GB on my graphics card is insufficient, but the automatically reduced demand to 10GB has nearly no effect, neither on the graphics displayed nor on its performance becoming too slow.

With the release of SU3 Final for MSFS24, I had the hope of a strong increase in performance of the simulator. As in my PC I have a 4TB M.2 SSD I hoped to benefit from having so much storage that I downloaded everything, a bit more than 500GB.

My PC has an i7 11700K CPU and 32GB of RAM, and an RTX3080 with 10GB of memory. So sadly the only perceivable improvement was that switching settings now is very fast compared to how it was before. Running the simulator, adding 2 monitors, each with a resolution of 3840x2160 60Hz. So my resolution is 3x3840 x 2160, and the FPS was acceptable even using pretty demanding settings.

I have been fighting to define the position of the 2 added monitors and the result of my immersion feeling while being good. So after updating the sim, I tried to run the sim in windowed mode and stretched the image, having just one window. I was excited that finally the image across the 3 monitors was perfect. But…

While normally I have FPS close to 30, now the FPS has dropped to 5 FPS making flying impossible. Reading the data when using the developer mode to show the values for the sim it was evident that my 10GB memory on the GPU was the barrier the sim was facing.

As a result, I will continue using the addm window function in the sim, and facing the fact that the 2 added windows will not match as it does with a single window across all 3 monitors. Specially because my TobII 5 would be usable in the single window mode, but not when I am running 3 monitors, each displaying its own window.

My power supply delivers 850W. Let us see which GPU would run on my PC, offering at least 24GB of RAM. Probably I will also have to upgrade my powere supply.

So here my update. The picture shows when using a single window spanning the 3 monitors!