#Stutters on 1000 Mbps

77 messages · Page 1 of 1 (latest)

violet venture
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That I don't remember having before Quest 2's v50s (I'm on Pico 4 Pro now). What's up with that? The micro stutters begin even when I go a little further than 500.

violet venture
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Hell, even 450 will start to micro-stutter after a bit

crimson holly
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Yeah, Same thing happens to me whenever I do 300 and up.

warm halo
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with what codec and connection?

violet venture
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Don't think you can achieve 1 Gbps with wireless and h265 xD

warm halo
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with hevc you should target 150-200

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its much more efficient - thus more suitable for use over wireless connection

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just use presets, dont touch bitrate slider or it will get messed up

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what does statistics graph show when it stutters?

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i dunno what decode is like on pico 4 pro - but all these headsets have some limit - and when it artifacts or stutters thats a sign

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quest2 and quest3 seem to have similar limit of 150-200 hevc

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i only use wireless and only use hevc

violet venture
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HEVC looks terrible even on 150 and on 200 it starts to have higher latency while still looking not the best (maybe because of AMD)

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And I remember on Quest 2 it was smooth as hell with 1 Gbps over wire before Zucc decided to mess ALVR up and introduce the "snow" artefact

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And as I see on Pico this artefact is not present

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So I would like to find out what happened, why it now stutters like that when the first time 1 Gbps was introduced to ALVR it was buttery smooth

warm halo
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you might be right - i can only comment on my experience with nvidia 3090/4090 and quest2/3

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dont have amd card to do comparison

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usually problem is on headset side - pc has no problem encoding it

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unless you have certain special cards that i cant mention without triggering the bot

violet venture
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but the thing is it never was like that before I gave up on ALVR with Q2's snow flake artefact

warm halo
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alvr just uses the hardware of your system

violet venture
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RX 6800 XT

warm halo
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and so do the other vr programs

violet venture
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I know

warm halo
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if you mouseover the stat graph when it stutters can you observe what is causing it?

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is it pc render or pc encode or headset decode or network?

violet venture
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it seems like it has something to do with frame buffering

warm halo
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ive read reports about this stuttering a lot lately

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@blazing rain @wild timber sus

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please try different versions of alvr and tell devs if you think some version is better

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you can use the alvr launcher to easily download and install different versions

violet venture
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I am not exactly new to ALVR xD

warm halo
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good - so you know how to reset to defaults and do clean tests

violet venture
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ye

violet venture
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Might be better for me to just jump on there

warm halo
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but you are comparing two different headsets right? should not expect same result

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variables are encoder performance on pc side - and decode performance on headset side

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quest2 decode performance we all know - and alvr presets target majority use-case

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what is different about pico 4 pro?

violet venture
warm halo
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so it has better decode?

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that means you can pump it more

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1000 is rookie numbers it seems

violet venture
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on q2 before v54-55 it was the same except the stutters

warm halo
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just hit it with more until you see artifacts or stutters

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and make sure to use high entropy test not low entropy (ie static scene)

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in fact dont even bother testing unless its something with very good graphcis and action (not beat saber)

violet venture
warm halo
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nope but i see other people compaining

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use old version of alvr if the new one is a problem

violet venture
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seems like on 20.10.0 there is no stutter at all

blazing rain
violet venture
violet venture
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Heheee

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Guess I am finally back in business

violet venture
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Finally got away from the Zuccy ecosystem of botching updates to the point of affecting hardware

brazen blade
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Have you tested the nightlies yet

solemn ivy
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I had a sort of white streaks across the screens

warm halo
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the bitrate behavior is completely different in lastest nightlies

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so whatever settings were good in the past are not gonna be good now probably - tune your settings again

blazing rain
solemn ivy
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It was after this commit

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@wild timber @blazing rain

solemn ivy
warm halo
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in latest nightlies that actually does what it says and thus image looks bad

violet venture
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Oh, uhh...

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Wow

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Sorry

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I did test some nightlies but at the same time I was still figuring out the Pico 4

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BUt someone else found what exactly caused the issue