That’s a disaster – 27.7 real FPS. It could be caused by many things, but I’d start with these three for diagnostics:
For testing purposes, switch to TAA instead of DLSS to rule out DLSS-related issues.
I haven’t had them for more than two weeks now and I’ve done several flights with different aircraft. Not a single Audio stutter. Have you changed something there? I’m not sure if this is one of the good phases and the bad ones are about to follow, but at the moment I’m pretty happy that they’re gone.
Even though I no longer have the problem, I don’t think there is any one solution for people that still continue with the audio sounds and CPU spikes.
I was dealing with this for the entire year, changing bios configurations, limiting my fps, and all the other solutions people have suggested. For me, the problem just suddenly went away around a month before SU4 was released. I just assumed that Asobo was making tweaks in between updates and one worked for me.
I don’t cap my frame rate, doesn’t matter whether I have vsync and gsync on or off, no longer disable other audio devices and actually bumped up my TLOD from 200 to 300 recently with no problems. The only thing I lower is the amount of planes, personnel and vehicles at airports (same as when I had these problems) and have always had fauna off.
I have exactly the same. I would probably recommend everyone to try a complete reinstall and deleting the shaders.
There was no traffic in this example TLOD was at 100. Interestingly, if I limit my FPS to 28, MS goes into the green at 12-15. Now up to 29 and higher it goes into 25-30 with X4 FG and FPS stabilizes at 117 FPS
However, if I limit my FPS to 39 on 3X FG then it is also green. Go up to 40 It appears that my system doesn’t like multiples of 120 , but multiples of 117.
@TenPatrol I using the the DLSS new preset L, so maybe it has something to do with it. I’ll test later just TAA. What is interesting is that with no frame limiter on the simulator and locking it to just the 162 FPS below refresh rate, gets me a smooth experience, while the rendering isn’t a a “flat line” as @SBSx9 has with frames limited, it has provided me the lowest MS and popping stutter free experience I’ve had.
But I’ll try all the different configurations later tonight and show the differences.
Here are my findings. System is RTX 5090, 64GB DDR5 RAM 6800Mhz, NVME 2.0 Samsung 2TB. Windows 11. Odyssey Ark @ 120 Hz (165Hz gives me intermittent black screen with my GSYNC On.) I have VSYNC and GSYNC (Full Screen and Windowed mode)
So in all of this testing what I found is that setting up GSYNC ended up changing my refresh rate down to 115-117. So anytime I locked the FPS to anything higher then that number it would increase the MainThread MS and I had to go down a couple of base FPS on the limiter from 40 to 38, or from 30 to 28. As soon as I turned off GSYNC as I shown below the limiting to a multiple of my refresh rate and FG combination would result in a smooth consistent 120 HZ which is the refresh rate I have selected. Any ideas why GSYNC is doing that? As soon as I turn on GSYNC those stutters and audio pops occur if I am not limiting the FPS to the 115-117 multiple.
A thorough test 
One important question: what NVIDIA driver version are you on?
Great. The recent driver generally behaves better regarding g-sync and frame generation, but your investigation shows that there is still some frame-timings math and encertainities involved.
Anyhow, in your case I see some very good looking options. I would start with one of healthy 40x3 setups, which gives you 25ms budget. As you are using only ca 14ms in Fenix at KJFK, you should be ok till you dont use any heavier traffic injection.
If 25ms will not be enough, you can always try to make a 30x4 setup working, which gives 33ms budget. Generally, I consider fixed 30 FPS the MSFS24 optimum, if only because all the consoles run it with 30 FPS locked.
Well I’ll like to say that updating my Nvidia Drivers from 566.36 to the latest solved the stutters, wow. 4070S
I’ve never had áudio and vídeo stutters since the first SU4 beta till the version .33. Since then with version .34 the stutters are crazy in 2D, VR, all planes and áreas, audio and video. I’ve tried to reinstall 3 times, different drives, pressets, tweaks, configs, even registry changes and it keeps ocurring driving me crazy. Its worse when I am in VR and look to the sodes and look ahead again.
Ryzen 7, 32gb ram, 3070ti laptop, quest 3, virtual desktop, openxrtoolkit
Thank god I am not the only one running into it. The audio stutters drove me insane a few months ago but managed to get rid of them, but just loading up this morning I see they are back again.
The sim just seems to have a stutter in general, maybe the Career backend patch for the missions did something?
I don’t get any or never have had audio stutters, but im getting heaps of video stutters when panning camera.
