(Not Resolved) Known Issue - Quest PCVR streaming micro lags and stutter esp. when moving head

[acreed11]

Hi team,

I'm getting micro lags and stutter in Airlink on my Quest 3 (EU/UK), esp. when moving my head. In the Oculus debug overlay this causes brief spikes in transmit/decode, fps drops and visible stuttering. The issue is not present on my Quest Pro with otherwise identical settings - see below screenshots to illustrate.

Few more details:
- Issue is not present on Quest Pro with same settings on HMD, router and PC (using same res)
- Issue is worse at higher bitrates, esp. >200mbps, but still present <200mbps
- Issue is unrelated to PC/game latencies (CPU, GPU, Queue each <5ms)
- Stutters/lags are intermittent (every 10-20 seconds) when not moving but happen immediately and reproducibly when moving the head to either side or especially looking downwards (i.e. on any bigger headset movements)
- Wifi 6E router (TP Link AXE75 EU/UK)
- EDIT: exact same issue with Asus RT-AXE7800 (EU/UK) wifi 6e router
- Connection shows as 2,400mbps
- Airlink codec H264 (but same on other codecs)
- I've attempted factory resetting, installing latest drivers
- Updated to v62 and latest Quest Link desktop version (I can see the 120hz option for my Q3)
- EDIT: Ordered a separate Quest 3 for testing: presents the exact same issue

-EDIT: Same issue on 5ghz 802.11ax 160mhz BUT switching to 802.11ac (!) completely fixed the issue. I cant test this on 6ghz but looks like 802.11ax or something related to how q3 implements it is the culprit

As the issue is worse the higher the bitrate and not present on Q Pro with otherwise same settings, I suspect it's related to the below known Wifi issues - but opening a new thread as instructed. 
https://communityforums.atmeta.com/t5/Get-Help/Known-Isssue-Unstable-wifi-coverage-with-Quest-3-on-s...

Best,
JensQ3QPro

Updates:
- Tried separate router: exact same issue with Asus RT-AXE7800 wifi 6e router
- Ordered a separate Quest 3: exact same issue on both routers

-Same issue on 5ghz 802.11ax 160mhz BUT switching to 802.11ac (!) completely fixed the issue. I cant test this on 6ghz but looks like 802.11ax or something related to how q3 implements it is the culprit

[0riginella1]

Do you think having those capture cards or top tier peripheral components may be too much?  Wondering if you scale it down it might work better,  like your output world need to be equal to the input not sure.   Hope you resolved it.   

[0riginella1]

One other thought and I'm new to VR but I disabled PEMT precision event memory timer on my computer once and had no latency with any game.   Do you have that option?  and I'm not advising you do that,  as it could not be safe to do.   But am curious. 

[CrustyBritches]

I'll be hacking some vents into the Quest3 where XR2 heatsink exhaust exits and where the intake fan can get some fresh air as the issue appears to be temperature related throttling. My warranty is over and I really feel the issues manifesting are from throttling / TDP limits decoding the data stream. Will post back here if successful.

[Rolldabeatz]

I am curios :3

[IRefuseToLose]

 so i haven't used it for like 8 months because i was frustrated by the lags provided by using wireless PCVR. I totally dropped out this gadget but decided to try some fitness in VR in hope that they have fixed something.

Unfortunately, the lags are just the same. Sometimes it lags when i move my head but sometimes it just stutters in games like Beat Saber which totally breaks all of the immersion.

Meta Quest 3 is one of my worst disappointment gadget i ever head. I really love VR possibilities and PCVR enhances it a lot while it is very laggy and inconsistent.

P.S. i have tried it with 3 different good routers and it is just the same...

[Rolldabeatz]

Today after a long time I tested the Quest 3 with a new WiFi 6e router(MSI Radix AXE6600) and the new v.77 update. And I have to report, that the issue has been resolved for me. Runs very smooth up to 500Mbps. 

And objects seem to be locked in 3D space with minor hitches when moving head around the object.

Further tests are in order, but it seems I can finally lay the Quest 2 to rest. 

[Babinok]

Tried PrismXR Puppis S1, thought connecting via USB would change something, but no miracle happened, works the same as my ASUS RT-AX82U in ax, i.e. with noticeable lags, but unlike the asus, which can be switched to ac mode and almost get rid of lags, you can't do this with this one, it only works in ax - returned it. Now I can confidently say that there is no router that would not have problems during streaming to the quest, this is the problem of the quest itself and it has not been solved yet and is not going to be solved.

[Digipro]

i wont ever be buying from them again i have changed their name to say "Boycott" a company who should know better, only rips me off once then i put them out of business.

[Digipro]

i wont ever be buying from them again i have changed their name to say "Boycott". A company who should know better, only rips me off once then i put them out of business.

[rmzalbar]

How do you explain My quest 3 running great for quite some time now on AC, AX and AXE? My roommate also, his working great too?