2.5GbE LAN causes jitterting problems exclusive to VRC
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°sky
Both Intel and Realtek 2.5GbE LAN ports on mid-high range motherboards (such as the x670e PG Lightning and Z690M Aorus Elite) have jittering issues exclusive to VRChat.
The jittering is not visible locally, however to every remote player there is extreme jittering and lack of stability when moving quickly.
Rejoining the instance temporarily fixed this for only 10-30 minutes before occuring again.
Setting the 2.5GbE NIC to run at 1GbE does not solve this issue.
Does not occur via Wi-Fi or native 1GbE NICs.
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~Nanochip
So the last few nights I have not been jittering nor have I seen others jitter. The only difference now is I'm using a Quest 3 instead of a Bigscreen Beyond. I doubt that would be the reason, so maybe VRC's latest updates have something to do with it? Not sure.
Avanera
I have a Gigabyte Z790 Aorus Elite AX and this sounds exactly like the problem I've experienced since upgrading to this rig.
Can anyone confirm that using WiFi on the same setup prevents this?
d
d4rkpl4y3r
I have this too on a Gigabyte AB350M-Gaming3 motherboard.
For me the time until it starts happening is around 1h - 2.5h. This timing is usually somewhat consistent on nearby days but changes constantly over the months hence the large range here.
Someone mentioned that it might have something to do with highly populated instances, but it happens to me in literally all instances. Doesn't matter if its player cap or just 3 other people besides me.
One thing I have seen no one mention is that the IK jitter starts happening at very slightly different times for each person observing me. So there is usually a small time window of 5-10 minutes where half the instance sees my IK jitter and the other half still sees me smooth.
°sky
d4rkpl4y3r interesting, thanks for the info. conveniently this board has hardware accelerated networking on it! this is consistent with what ive discovered so far.
from my own observations, people with hardware acceleration cannot see eachother jitter, however other users will see both jittering.
im starting to think its the packets getting all scrambled and only other accelerated nics knowing what to do!
d
d4rkpl4y3r
°sky Does the not seeing each other jitter that you experience only happen when you both are currently affected?
Because I absolutely do see two of my friends be affected by it from time to time. But since I usually rejoin once someone mentions it I am not affected myself at that moment where I observe the others.
F
FläppyBird
It seems I have successfully fixed the issue,my friend said that the jitter was no more after I woke up from sleep.Here's what I did :
I updated my Realtek Gaming 2.5Gbe Family Controller Driver to this version which is the latest:(attached document)
I also noticed after updating it reset some manual changes I made to the adapter settings ,so I will just post them here.Most of it is power saving features,which were re-enabled :
Advanced EEE : Disabled
ARP Offload : Disabled
EEE-Max Support Speed : 2.5 Gbps Full Duplex
Energy-Efficient Ethernet : Disabled
Flow Control : Disabled
Gigabit Lite : Enabled
Green Ethernet : Enabled
Interrupt Moderation : Disabled
IPv4 Checksum Offload : Disabled
Jumbo Frame : Disabled
Large Send Offload v2(IPv4):Disabled
Large Send Offload v2(IPv6):Disabled
Network Address : Not Present
NS Offload : Disabled
Power Saving Mode : Enabled
Priority & VLAN : Priority & VLAN Disabled
Receive Buffers : 512
Shutdown Wake-On-Lan: Enabled
Speed & Duplex : 2.5 Gbps Full Duplex
TCP Checksum Offload(IPv4) : Disabled
TCP Checksum Offload(IPv6) : Disabled
Transmit Buffers : 512
UDP Checksum Offload(IPv4): Disabled
UDP Checksum Offload(IPv6): Disabled
VLAN ID : 0
Wake on Magic Packet : Enabled
Wake on pattern match : Enabled
WOL & Shutdown Link Speed : 10 Mbps First
In addition to this,the options in the Power Management are all checked(attached document)
Not sure how this plays out for other network cards ,but hope it helps
°sky
FläppyBird ill give this a try tonight. im not very hopeful but if this works then great!
~Nanochip
°sky Did this work for you? I'll also be trying this tonight.
°sky
~Nanochipi completely forgot tbh
~Nanochip
FläppyBird this doesnt work
F
FläppyBird
~Nanochip I ran some tests ,and yes sorry this doesn't work, but the problem is gone for me,not sure what exactly fixed it
F
FläppyBird
perhaps disabling msi mode works, does a fixed value for interrupt requests? The requests are in range to prioritize certain traffic which is causing this?
F
FläppyBird
Has anyone tried running their 2.5 Gbe lan at 1 Gbe or 100Mbps,and check if the issue persists?Also this seemingly does not happen in other games because they don't have to load random avatars and everything is pre loaded,can someone try to reproduce this issue in something similar to vrchat,like neosvr?It seems the more other users change the avatar,the worse it gets,I suspect it has something to do with some sort of network cache
°sky
FläppyBird i run my nic on 1gbps and it happens. im unaware of this occuring in resonite or any other game or app
F
FläppyBird
°sky I may or may not have found a lead on this,try setting the receive buffer to 512 and transmit buffer to 128,in advanced adapter settings,let me know if it works.Here is another lead, uninstall chipset drivers(windows updates reinstalls them so disable optional updates first)
~Nanochip
would simply buying a pcie network card be a temporary fix for this?
°sky
~Nanochip nope! tried and still had it.
Galaxy64
I too experiance this issue im rocking the x670e PG Lightning im unsure how to fix it or if its even possible to find a temp fix
°sky
ive been told theres a possible fix for this, yet to test but ive heard good things.
apparently
going to device manager -> network adapters -> properties -> advanced
, and then disabling anything with "offload" in it's name should fix this. im going to do some testing throughout the week to see if this resolves it and update here.anybody else who does this, please post results!
°sky
update: this doesnt work still lmao
~Nanochip
°sky I heard this as a possible fix as well as this one: https://www.reddit.com/r/buildapc/comments/tft3u0/is_realtek_25gbe_lan_issue_fixed/
Will test it.
~Nanochip
update: this doesn't work :(
StormRel
Merged in a post:
Network IK Jitter for certain users
~Nanochip
I have been experiencing severe Network IK jitter/lag when existing in a populated instance after about an hour or two.
What I know:
- Consistently happens to ONLY me and one other friend, but no one else in my friend group.
- It's not avatar specific (changing/resetting avi doesn't do anything)
- Enabling/disabling OSC doesn't do anything
- Recalibrating FBT doesn't do anything
- It's not world specific, though I think maybe it has to do with highly populated instances?
- Avatar debug menu looks fine
- It happens after about an hour or two of me being in the instance.
- Rejoining the instance fixes the issue for a bit, then goes back to this.
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