Using a quest 3, gigabyte 4080, 7800x3d, gigabyte aorus 32gb ram and gigabyte aorus motherboard. Still I cannot get stable flights. Somehow I get stutters when moving my head . When should you switch VR ? Am using virtual desktop. I normally fly only airliners like the pmdg and now the new ifly max.
check whether you are actually connected with 5Ghz (check virtualdesktop discord for wireless AP recommendations). PC should be on LAN to router/AP.
That is ideal, although apparently not essential, depending upon your home layout and neighbouring Wifi traffic.
I have a spec very similar to the Op, with a 5800x3d as the CPU and 4080 super as the GPU. I have an ISP router, in modem mode, and a wifi 6e primary router to serve the needs of the whole house. Perhaps fortunately for me, that router is about 5ft from my quest 3, when it’s on my head, and the vast majority of the household’s wifi traffic is on 2.4gHz or 5gHz. Having scanned for other wifi signals, it would appear that there are just 2 or 3 fairly weak transmissions, that are certainly not using the 6gHz that my Quest 3 uses.
I wouldn’t say that my performance is perfect, with an occasional stutter, probably caused by scenery data being loaded, so no real fault of the VD/headset setup. Other than that, I get a very good and stable experience and I am probably at the point where I don’t need to do too much fiddling, although I won’t say none, as that wouldn’t be natural for a VR user. 
I have currently got my SSW (permanently on) framerate limit set as just 72fps, having very recently switched it down from 80fps, mostly to create a little headroom for AI traffic in MSFS, which I will either reintroduce next month with FS2024 or BATC if the integral ATC is still not good. I’ll report back if that is too low, but first impressions are that it actually appears to improve clarity. That might be a placebo effect though, so I’ll probably need more time to confirm.
For other settings, I use the Quest specific AV1-10bit codec, godlike resolution and dynamic bit rate.
Like you appear to be thinking, I suspect that the op might be best to review their network setup and maybe MSFS/VD settings, rather than worry too much about the PC’s specs.
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Hehe too true!
Can you explain what exactly you mean. What are you seeing?
Smooth scenery UNTIL you turn your head? Then what? Does the SCENERY stutter, or just the “cockpit”?
Is it really a stutter or just jerky / unsettling rotation?
Is it the same in ANY scenery/scenario (light, heavy, photogrammetry)? Or does it vary?
Is it constant or does it recover if you remain facing the “new” direction?
Can you check what your VRAM Usage is at at these times?
There are many many breeds of stutters (I know… I have catalogued them all!) so it would help to narrow this down so we can advise a possible place to focus on for a solution.
I suspect I know what you mean and I do have a solution but will wait for your reply so as to not confuse the issue.
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Get stutters in background. Sometime it stutters same place and sometimes when turning aircraft during taxiing.
rtx 4800 Super + new Ryzen 9700x. 32 gb ram.
Using virtual desktop only, haven’t even installed the oculus software on my pc at all. VDXR - quest 3 AV1 10-bit - god like - 200mbps - snapdragon on - 80 fps + openxr toolkit for CAS - wide ring quality foveated rendering - res override at 3600px
Everything is smooth as silk ! 
(PC wired to WIFI6 router and router is about 10 ft from my gaming cockpit)
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