I have to say MSFS2024 is disappointing me greatly as I'm suffering horrible VRAM problems.

The sim is unloading models and textures when I pan away from them.  It's using 18Gb of my 32Gb VRAM.

Now I'm sure this is a problem lots of people would like to have, but please Asobo, where VRAM ISN'T an issue and there's lots of it to spare, can you fix it so model LODs/textures aren't culled please?

Wow. You've just saved me a ton of money 😀

Interesting … what driver version are you using?  

I haven’t upgraded my nVidia drivers recently and sticking with what seems to work in “most cases” … still get texture corruption at some airports (not all) at specific zoom levels and LOD.  On my AMD GPUs 7900XTX, 9070XT I do NOT experience any texture corruption at these same airports with same Zoom/LOD settings so the problem seems to be nVidia and/or my 5090 exclusive.

In most cases I’m pushing 24-30GB VRAM usage.  On SU2.

What I have noticed with texture swapping in/out is when I switch to Drone camera, it’s extremely noticeable as I move the drone view around the airport.

I thought SU3 was going to fix all these LOD issues and give the customer more control?  

In P3D there were settings in the .cfg we could use to prevent the texture dumping issues (which worked well at the cost of more VRAM).

MS/Asobo do seem to be very aggressive on dumping textures along with shadow renders very short distances … assume because of VRAM consumption and FPS degradation?  

I do hope MS/Asobo give some control back to the customer, some of us aren’t FPS hunters, we’re image quality connoisseur and couldn’t care less about a blurry 120, 140, 300 FPS.

Edited August 6, 2025Aug 6 by SayAgain

14 minutes ago, SayAgain said:

Interesting … what driver version are you using?  

I haven’t upgraded my nVidia drivers recently and sticking with what seems to work in “most cases” … still get texture corruption at some airports (not all) at specific zoom levels and LOD.  On my AMD GPUs 7900XTX, 9070XT I do NOT experience any texture corruption at these same airports with same Zoom/LOD settings so the problem seems to be nVidia and/or my 5090 exclusive.

In most cases I’m pushing 24-30GB VRAM usage.  On SU2.

What I have noticed with texture swapping in/out is when I switch to Drone camera, it’s extremely noticeable as I move the drone view around the airport.

I thought SU3 was going to fix all these LOD issues and give the customer more control?  

In P3D there were settings in the .cfg we could use to prevent the texture dumping issues (which worked well at the cost of more VRAM).

MS/Asobo do seem to be very aggressive on dumping textures along with shadow renders very short distances … assume because of VRAM consumption and FPS degradation?  

I do hope MS/Asobo give some control back to the customer, some of us aren’t FPS hunters, we’re image quality connoisseur and couldn’t care less about a blurry 120, 140, 300 FPS.

The latest - 580.88

Isn't that a sim issue?  You're not running out of VRAM, you're just experiencing the annoying over-aggressive LOD issues in 2024.

I actually run out of vram from time to time on my RTX 4080 (16GB)

Yea this isn't a VRAM issue...with 32GB on the 5090 you'll surely hit the CPU threshold limit before your FPS is strained by virtual ram reach allocation.

The sim needs better optimization, hopefully MS/Asobo can get it right soon.

When I look at what my own system can do in MSFS 2020 with 6GB VRAM in DX11 mode, it disappoints me that users with Skynet cards can suffer with VRAM problems of any kind. It makes me wonder just how efficient DX12 really is......

15 minutes ago, ryanbatc said:

Isn't that a sim issue?  You're not running out of VRAM, you're just experiencing the annoying over-aggressive LOD issues in 2024.

I actually run out of vram from time to time on my RTX 4080 (16GB)

 

11 minutes ago, blueshark747 said:

Yea this isn't a VRAM issue...with 32GB on the 5090 you'll surely hit the CPU threshold limit before your FPS is strained by virtual ram reach allocation.

The sim needs better optimization, hopefully MS/Asobo can get it right soon.

Yes its a sim issue. I was being slightly tongue in cheek given the context of discussions in a recent thread about VRAM use.

But its clear there's some further development wiggle room, "one LOD curve fits all" clearly doesn't work brilliantly for all users, at either ends of the hardware spectrum.

Just now, kevinfirth said:

 

Yes its a sim issue. I was being slightly tongue in cheek given the context of discussions in a recent thread about VRAM use.

But its clear there's some further development wiggle room, "one LOD curve fits all" clearly doesn't work brilliantly for all users, at either ends of the hardware spectrum.

Fingers crossed they make this a top priority via hotfix patch soon!🍻

My 4090 drives 2 4K tv’s and with High/Ultra settings VRAM does not exceed 15 Gb…

But I am using the Prosim 738 without VC.

Kevin, if you try a glider ( less instruments ) how is your VRAM ?

9 minutes ago, kevinfirth said:

The latest - 580.88

Try DDU and go back to the earlier drivers (I think I’m on 578 or something) … nVidia has been a cluster of ride with their driver updates.  I think they shifted 95% of the gaming/desktop graphics driver engineers to AI path.

16 minutes ago, kevinfirth said:

 

Yes its a sim issue. I was being slightly tongue in cheek given the context of discussions in a recent thread about VRAM use.

But its clear there's some further development wiggle room, "one LOD curve fits all" clearly doesn't work brilliantly for all users, at either ends of the hardware spectrum.

Have you tried using AutoFPS?  maybe you need to load the 5090 up more?

I have a 3070ti that seems to do fine with 8 GB. No stutters, generally around 60 fps with the PMDG 777 and Fenix BFU. I don't install custom airports or generally AI traffic since it's so useless, but have no problem flying on VATSIM. 

If anyone wants to trade their 5090 for my GPU, I'm totally open to a swap.

Best wishes to all.

I think many of you didn’t understand Kevin’s post … he’s NOT running out of VRAM, just the opposite, not enough VRAM is being used because textures are being swapped out.

I recommend learning about 3D graphics pipeline and render passes and texture storage … more VRAM usage = better image quality and better FPS.

I’m about to endeavour on an AMD 9980X (hard to find just released July 31st) with sTR5 motherboard (ASUS) and a nVidia RTX Pro 6000 96GB VRAM DDR7 workstation … not for flight simulation but for other projects I’m working on that I hope reap rewards at a later date.  

The need for VRAM is real, even more so when you mention things like “AI” … you should see rendering comps in DaVinci Resolve 20 using AI Ultra in some of the nodes … they eat VRAM for lunch … this it to render high quality images … the same type of images we want to see in real time in a simulator/game.  But what you do see in a flight sim or game are already highly optimized and reduced image quality to make it work with more affordable hardware.

Given all that, MSFS 2024 is trying and doing an OK job (impressed me) … if they give us more control on shadow LOD and texture LOD then we can maximize our hardware.

Better image quality always comes at a cost … putting fake frames aside for real frames … fake frames was an attempt to make less capable hardware keep up (FPS).  Many don’t even notice the lag or blurred images or ghosting.  Kudos for nVidia and AMD trying to keep the cost of image quality affordable (except of course the price of the GPUs and scalpers, but otherwise … ).  

Not trying to be an elitist, but in most cases “optimization” = lower image quality or reduced LOD.  If you’ve noticed over the decades of Flight Simulation, the hardware/performance debate has continued endlessly with each “new generation”.  Ask 3D modelers, their “optimization” process will be to reduce geometry and reduce texture sizes/quality to improve performance … this has always been the case, but regardless how you slice it, performance comes at the cost of image quality.

32 minutes ago, jrw4 said:

I have a 3070ti that seems to do fine with 8 GB. No stutters, generally around 60 fps with the PMDG 777 and Fenix BFU. I don't install custom airports or generally AI traffic since it's so useless, but have no problem flying on VATSIM. 

If anyone wants to trade their 5090 for my GPU, I'm totally open to a swap.

Best wishes to all.

MSFS 2024 is a very interesting application.   I have the identical hardware scenery philosophy as you (except that native AI is enabled....I agree, it's subpar) and experiencing the same performance as you.