4090 causing stuttering?

Hi, you are not alone. I just updated my PC from a 10900K/RTX 3090 to a 13900/RTX 4090 and now I am also seeing stutters I haven´t seen before. I have the feeling it has to do with the way weather/clouds are projected in the sim.

Yesterday evening the clouds weren´t displayed correctly in MSFS (no clouds at all) and there was no stuttering. So my conclusion is, that it´s not my system causing the trouble.

The last MSFS update did something to the weather system of MSFS that seems to be causing trouble. I guess I´ll have to wait a couple of days to find out if I´m right or not.

It is very difficult to pin down a problem in an online game. Finding out if it is a hardware or system problem on your side or a problem connected to the program itself isn´t easy.

I don´t know if this is of any help, but I thought I´d let you know I´m seeing the same problem.

Thankyou its always good to know others have the same problerm. And I agree with you about pinning down the problem, but then again if the issue with a sim update then it would affect more people and there would be many more complaints, so I guess its our own system thats the cause. Thats how I am thinking.

You´re right in a way, but I don´t understand why faster hardware should cause inconsistant stuttering.

I´m flying online in VATSIM right now. I´ve reached Spain. No clouds, no stutter.

Please forget my theory. I just had a minor stutter without clouds. Hmmmmmm.

Thats my problem. Lots of theories and very few turn out to be valid. For me, every other game is smooth as silk. Do other games run OK for you?

I will try with my old 2070 when I can, see if that helps.

I don´t play anything else :joy:

It´s me again. After my last flight I did what the community manager had suggested further up in the thread.

I went through a clean installation of the latest Nvidia driver. One thing I noticed right after a fresh reboot after the installation and starting MSFS was a differance in the ingame audio. Every switch sounded better. I can´t tell you what exactly happened, but now I´m getting 50 FPS in flight using the Fenix A 320 in VR (Varjo Aero), before I got 30 FPS. And: tata! The stutters are gone.

Do you ever run 3Dmark? There is a free version there and you could use that to check for stutters. Runs perfect for me. Its only MSFS which causes problems.

No, haven´t used that, yet. Never needed it. But I will check it if the problem persists.

I´ve only used the Nvidia performance tool and the built in FPS display. Things have improved after installing the driver again. I don´t see any red spikes anymore. I had a lot of those before. But of course I´m still limited by the main thread.

The only thing I see now are little jitters in the glass displays of the A 320 once in a while. But those I can live with.

OK I just put my old 2070 back and its still stuttering. Not as bad but still terrible.
Its kindof a good thing because I cant point my finger at the 4090 any more.
Maybe the game is corrupted or something and thats why I get warnings every time. I will try to remove it completely and reinstall.

Please let me know if that solved your problem. As others have written in other threads it might help. Good luck!!

Its downloading now and its taking ages. Been going for a couple of hours and only 10% done. Might have to leave it overnight.

Try emptying your Nvidia shader cache’s as per Q8’s video here…

You will need to do this in SAFE MODE.

Cache

Charles

Thanks, I will try that if it ever stops downloading.


Had to stop last night because it was taking too long and restarted earlier. Will let you know what happens here.

Still no luck :frowning:
I first tryed completely removing MSFS and reinstalling, this is on my nvme drive. I have 3 drives, a 2Tb nvme where Windows and MSFS are installed, a regular 500Gb SSD not doing anything and a regular 2Tb HDD. While it was installing I had a thought that one of my drives might be failing so when FS tries to access some file it struggles and stutters. I did a scan of my drives and they were all working fine though.

When the installation finally finished I ran it and it was still stuttering as before so I decided to do another removal and reinstall, this time on my SSD. If anything the stuttering was worse. So in summary I have done 2 complete reinstallations today and neither helped in the slightest :frowning:

I did find this post which does sound very simialar to my issue:

He has written a big list of things he tried (most of which I tried). Only thing that fixed it for him was reinstalling Windows. An absolute last resort for me.

Only thing that helped me once was disconnecting my ethernet cable so I might try that later again and some other related things.

Small update… I tried doing as Charles said i.e. deleteing cache and it didnt help in my case. For me the stutters are 15 seconds apart. As if its trying to access some disk or network resource every 15 seconds.

I then disconnected my ethernet cable, reloaded the sim, started at some random airport and had complete success. No stutters all the time I was watching, about 10 minutes. So now I just need to narrow down the network/internet fault. Will keep you informed of my progress whether you want me to or not.

Hi @TailoredSpark77 !

Ok, I have not red all the post in there, I just wanted to add that Stuttering are most often caused by Network/Internet/Harddrive. In most cases it’s because your sim cannot load the data quick enough and struggling to keep your flying going.

For me, not only deleting but disabling the rolling cache completely fixed my suttering issue, and it was very bad. I’m running on a 400Mb/s internet connection and it’s enough to not use the rolling cache.

The sim is also running on his Nvme SSD drive, with his addons, exclusively.

There is a few settings on windows that I don’t know by hearth that could help you with your sim having the best bandwidth.

Good luck !

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Thanks for the input NixonRider but I deleted and disabled the rolling cache as you suggested and it didnt seem to work in my case.

However I think I might have solved the issue…

In the Windows network settings you can change the connection to public or private. I changed to private the other day because “Virtual Desktop Streamer” (for my Pico 4 VR headset) asked me to. I had almost forgotten I changed it but setting it back to public has eliminated the stutters and it doesnt seem to have any affect in virtual desktop either. Embarrasingly simple I know, but thats all that was needed in my case.

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