I was watching my windows task manager performance tab the other day when in a VR flight and I noticed spikes on my GPU usage with a correlating spike in my ethernet usage. My question would be whether stable internet could be the cause of stutters in VR? I deleted my rolling cache and turned it off based on others suggestions it can cause stutters. My CPU utilization is remarkably low but my GPU utilization is 80%. Running a I-9 13900K with a 4090 and 64G Ram @ 5600mhz. Most of my stutters are not subtle, but rather big “zaps” where I am running 50fps and dropping to 23fps for a second. That is where I see the spikes in both the GPU and Ethernet. I capped my frame rate in Nvidia at 50.
From my understanding,
Scenery within MSFS is basically like streaming Netflix.
It’s constantly pulling the data, so if your bandwidth is slow / laggy, it could lead to stutters.
Have the same systemspecs as you. I also get these spikes with mayor stutters, but for me it’s not on the GPU, it’s on the CPU. The mainthread is completely going in the red zone from time to time. Are you on win 10 or 11 ? My settings are OXR is 200, using MR (shifting between 30 or 45 FPS), DX11, ingame renderscale 90, medium to ultra settings primarily high. I am on DLSS quality. I am not using the OXR toolkit anymore.
I have invested in the best spec PC available and it’s pretty annoying that I don’t get any smooth performance. When I turn MR off in OXR it’s a stutterfest 
Would you mind providing these specs?
At the end of the day, MSFS is not optimized to the point of making full / efficient use of top tier hardware.
Of course here are the specs. Always a discussion what the best hardware is, but the specs represent some of the best out there:
Asus Z790-A Prime (WiFi)
Intel® CoreTM i9-13900KF Processor
Asus ROG Strix LC II 360
Corsair 32GB DDR5-5600 Vengeance RAM
Kingston Fury Renegade 2TB NVMe PCIe
Asus GeForce® RTX 4090 OC 24GB TUF
Asus ROG Strix 1000G 80+ Gold
Kingston NV2 2TB M.2 NVMe PCIe 4.0 SSD
Perhaps something worth trying:
Enable your rolling cache and then do 1 or 2 flights in VR around one particular spot (e.g., Innsbruck). Then, completely disconnect your PC from the network and start MSFS (it will run in offline mode).
Depending on what version of MSFS you have, some aircraft may not be available in offline mode.
Load a flight into Innsbruck in VR and fly a similar route. It it’s still stuttering then it may not be an Ethernet / internet issue.
Cheers,
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What CPU frequency are you running - especially for the one core that runs MSFS almost to 100%.
Maybe try removing your frame cap limit, I had read elsewhere that this helped someone, though I can’t remember which thread I saw it in now.
I haven’t changed the cpu settings at all. Just whatever came shipped the I-9 13900k. The CPU utilization is low.
If you think CPU utilization is low (it really isn’t), make sure you select Change Graph to-> Logical Processors in the CPU window of Task Manager. The CPU utilization that is printed out is an average over all of your core processors, so it always looks like a small value. There should be one core that is near MAX (>90%) as well as several others. Usually Turbo Boost will kick in automatically but maybe not so run an application like HWInfo or OCCT to see just what that your cores are running at. Your CPUs should be running at least at 5Ghz. Sometimes if you haven’t set the power plan up correctly, they aren’t running in turbo boost - worth it to check. Most of us are seeing stutter from the CPU as much as from the GPU
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OKay, thanks. I will try this tonight and see what i get.
what if my bandwith is not slow? After all this is the first thing I checked. I still have been getting connection lost messages lately (since about three days) without having made any changes to my internet settings.
Generally from reports on the numerous “slow download” threads, people have good bandwidth to every site EXCEPT whatever backend Microsoft server is hosting stuff for MSFS, perhaps due to a poorly run content delivery network (CDN) or network routes to it sending too many people to overloaded servers, or via overloaded routes, and slowing down those things but nothing else on your system.
So eg your ISP’s bandwidth meter helper program will show you getting good bandwidth, but you might have a lot of slowdowns and delays when downloading MSFS packages or downloading MSFS scenery.
The only thing that anyone has ever shown to work is using a VPN to connect through a different location, and that seems to be hit or miss as you may just get directed to another overloaded server or route.
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What is a VPN, and how do you tell your system to do it?
A VPN is a “virtual private network”, it’s a way to send network traffic through a secure “tunnel” through your regular internet connection to another place, where the traffic then goes out to reach the internet from there instead of from your house.
These are often used to securely access private local networks for work, or to route your traffic through another country to get a streaming site to see you as a legitimate audience. 
There are many services providing VPN connections with different focuses and endpoint locations. If you’re not sure which to try, Mozilla offers a paid VPN service these days:
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They make you pay for a subscription, and what if it is not the solution?
As mentioned before, my internet connex. is excellent, I can measure this even during FS active. The MS server seems to throw me in and out, and the result is that my online connection is indicated as offline. I am sure MS must have a solution. I expect this from a software giant, and with a game that is now 4 years old.
as a workaround you can try with proton vpn, it offer some free server and unlimited data
you can also try another payware vpn, and if within the first week it doesn’t fit your expectation most allow to ask for a refund.
I did this with Nordvpn
I never seem to have a problem with this, but I do have a quick connection:
I always am tethered directly to the router using a cat 8 cable, I know some people have had issues running wireless depending on the configuration of there network and any interference that might occur.
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That’s fast!
I wonder if the folks having wireless issues are using WiFi 5. I upgraded my router to WiFi 6 to match the card in my computer, and I get around 500Mb/s in a speed test.
A direct wired connection is best, of course, but I don’t have a lot of other devices (just my Roku TV and my laptop) sharing the same connection.
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