If you’re not using the motherboard’s onboard graphics, you should disable it in the bios. That way Windows would not even be aware of it.
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I recently tried to make a flight from miami to dallas y in the PMDG 777F, initially all went well, i used the latin vfr miami with FSTL traffic, I had 80-90 FPS at taxing and take off. At cruise altitude entering texas form the gulf my FPS tanked to teens and single digit numbers and GPU usage went to 100%, I was not near any major cities and there werent many clouds near. This issue had happened before just after touchdown in another airport but at cruise altitude it was very un expected. My settings are mostly High and only clouds are ultra. My system is a ryzen 7 9800 x3d and RTX 4070 super. I presume this problem is the famous VRAM bug I thought they would get fixed with SU4, at this moment the 777 is unusable, this has also happened on touch down with the citation X. I am lost at what to do.
What is your texture resolution and tlod at? (and screen resolution)?
I have a high end system and very quickly after I start FS, even in a lower-end aircraft (Asobo C172, TBM 930) the framerate drops to 4-9fps, rarely exceeding 14fps.
I deleted all the cache from the AppData\Local\Packages\Microsoft… folder, but that did not fix the issue.
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Intel(R) Core™ i9-14900K (3.20 GHz)
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Installed RAM 32.0 GB (31.7 GB usable)
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NVidia RTX4090 + 24GB VRAM
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2x 2TB SSD
Now MSFS2020 greatly outperforms 2024, even when running PMDG B737-800. In 2020 I am getting close to 50fps.
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With such poor performance like that, I suggest you do a clean reinstall of MSFS 2024 per the MS instructions here. If you have anything of note in your community folder, backup or relocate it before proceeding, and restore it after re-installation is complete. Make sure you don’t skip the step where you manually delete the MSFS install in your user folder, as this will properly clear out any potentially corrupted installation files.
I have the same and I did a reinstall already.
If you have by any chance Vsync on, try to turn it off. Reduced a lot off stutters on my system I just noticed.
A reinstall or a clean reinstall as I describe above? With major MSFS 2024 issues, doing just the former doesn’t usually resolve them.
Since SU4 I’m experiencing over committed VRAM issues on landing after longer flights (>4 hrs). Everything is fine - start from a payware airport with 8 GB of VRAM usage, everything continues normally, then after landing, even at a small default airport, VRAM usage maxes out and the sim grinds to a halt basically. RTX 3808ti with 12 GB VRAM. Only started happening with SU4.
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It was fixed with 33 but with34 it’s all back again. It is really a horror show. Just made a video about it and will be live tomorrow. Asobo, Microsoft and Jorg will be sooooo proud…
The VRAM problem from SU3 is solved, but nevertheless it’s easy to configure your system in a way overwhelming your VRAM. With 16 GB of VRAM you should not waste 2 GB VRAM for background apps.
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“Fixed” does not mean you now have infinite VRAM to do what you wish - there’s still a limit, and without any other context about what you’re trying to do, it’s impossible to say if you’re actually experiencing an issue at all.
I know I’m limited by my gpu but… It’s crazy that starting sequecnce, with zooming in to the airplane before the flight, is sometimes turning on this vram limt message. If you lower LOD before starting the flight and then crank up LOD, when you iside the airplane, the message doesn’t appear 
This message just makes no sense. Its appeareance doesn’t have any impact on fps.
As promised: See at 20 minutes
You can see the fps drop within 30 seconds. The landing fase is incredible… WHY?!
Really sad Asobo!.
This is a problem of too high graphic settings in combination with ressource wasting addons. EDDF, a large air liner and a external addons are far too much for 12 GB VRAM.
Your VRAM is overwhelmed, you have only 12 GB and only 10 available. You have to reduce your graphic settings in general, in particular the traffic settings (cars etc.). Additionally stop background tasks consuming VRAM (there are several, otherwise the availabiel VRAM would be higher).
Last but not least the addon talking to you (Checklist entries etc.) causes a lot of stutter. It is obvious, that the stutters beginn every time the addons tries to talk to you.
I’m pretty sure, it will be possible to tune your system in a way, that more or less no stutters occur with only minimal visible impact.
As I said: SU4 is better, than SU3, but it is no good idea to keep the old settings from SU3. Since the ressource consumption of certain settings has changed significantly, all settings have to be optimized again.
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Yes, in my experience Firefox is the worst hog. Chrome is better, but best to kill them all. My 5080 is running at 60-70% capacity for GPU computing but slowly in inching up to 90%+ for VRAM when I increase parameters to improve image quality, e.g. texture resolution ort TLOD.
FYI,
This was with the same setting I had in 2020 incl multiple addons (OLOD & TLOD at 100). I could have everything in the green but with way worse textures in 2024. VRAM is still killing, mega FPS drop in the descent so it’s SU3 all over again. With 1.6.33.0 it was nice and smooth, with 34 the result as seen in the video. 34 was introduced 1 day before they went for a holliday, probably without testing it first as usual. We are doing that. They just don’t care.
So 2024 is for me still a major downgrade and back installing 2020 with everything smooth and a wasted €140,- so far incl multiple addons etc.
I see nothing wrong here cough, not even a custom scenery or any mods installed.
just Asobo 737 max in LOWI lmao.
Asobo will never fix their horrible VRAM management with DX12.
It was like this in FS2020 as well for years.
And now DX12 is a forced API.
For comparitive purposes, you should try the same flight using only the stock sim and the same graphics settings but with no add-ons.