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Massive desynchs on high population servers
Closed, ResolvedPublic

Description

Occured with patch 1.26

Playersize >= 40

Massive Red / yellow chains
Massive rubber-banding
Massive Desyncs
Takes players 2+ seconds to die after being killed, etc.

Serverspecs:
OS: Windows 2012
CPU: E3 1245V2 3,4 GHZ+ (4C/8T)
Ram: 64 GB
HDD: Raid 10 SSD
Connection: 1 GBit/s

Arma3-Server seems to consume the same amount of bandwith

Details

Legacy ID
3046629258
Severity
None
Resolution
Fixed
Reproducibility
Always
Category
Multiplayer
Steps To Reproduce

Run server with 1.24 (vanilla, Perf, Perf2, perf3 or perf4 - we had it with vanilla and perf4)
Install package as provided (see rar-file)

> Server runs fine with 60 players (20-ish ServerFPS, 7-12 CPS), 0 Desync issues

Update to 1.26 via SteamCMD

> Players >= 30 - desyncs are noticeable

> Players >= 40 - desyncs are the regular norm

> Players >= 60 - desyncs are so massive that your vehicles start flying and your having a discrepancy of 5+ seconds between action and reaction on screen.

Additional Information

https://www.dropbox.com/s/ilw4u5kh04wt6u0/arma3s4.rar

Includes:
Screenshots of ASM
.RPT-File
All missions we are running (they are variations of the same codebase - different layouts)
.Arma3Profile
.basic.cfg
.server.cfg (custom parameters in mission rotation - be advised)
.startParameters.cfg (Par-file)

report triggered by:
Dwarden (David Foltyn): I would need repro mission and details all in A3FT ticket and hopefully someone else confirm it to rule out mission / server config issue

Event Timeline

ECID edited Steps To Reproduce. (Show Details)Aug 20 2014, 9:57 PM
ECID edited Additional Information. (Show Details)
ECID set Category to Multiplayer.
ECID set Reproducibility to Always.
ECID set Severity to None.
ECID set Resolution to Fixed.
ECID set Legacy ID to 3046629258.May 7 2016, 7:16 PM
hladas added a subscriber: hladas.May 7 2016, 7:16 PM

Could you please try add to server config

guaranteedUpdates = false;

Jermin added a subscriber: Jermin.May 7 2016, 7:16 PM

Doesn't work. Still the same

thhamm added a subscriber: thhamm.May 7 2016, 7:16 PM

Same here, even with guaranteedUpdates = false;, instant desync even with 2 players.

Sorry, DEV version that is, started with the tuesday patch i guess.

santa added a subscriber: santa.May 7 2016, 7:16 PM
santa added a comment.Aug 21 2014, 8:41 PM

Hellow,

Same here, desynchs.

Fepaje added a subscriber: Fepaje.May 7 2016, 7:16 PM

I tried it on my server too. But still the same extreme desyncs. It is unplayable with more than 20 players.

TLU added a comment.Aug 21 2014, 11:48 PM

Same for our server desync maxes out then go again but after 1 hour of uptime its not playable.

We have changes the basic.cfg but still nothing its since the 1.26 update

Levia added a subscriber: Levia.May 7 2016, 7:16 PM
Levia added a comment.Aug 22 2014, 8:33 AM

Same here, after a while the desync kicks in and everything grinds to a halt. >80 players. No issues before 1.26

Same here. We get massive desync since the update.

We are experiencing these issues too. The desync and rubberbanding just slowly creeps up on you and eventually kills the server.

Please help us out here! We all at the Breaking Point community are in shambles over this last update! The desync is absolutely gamebreaking. Thanks guys and good luck finding the problem.

I like many others have been suffering from massive amounts of desync ever since the last update... All of arma 3 MP is completely unplayable for me.. This needs to be fixed ASAP

For me, desync kicks in after the 3rd player joins the server. Everyone who joins after player #3 gets 100000 desync.

Same here. Stop releasing Karts DLC's and work on the real issues, FFS.

get your shit together and fix this problems you noobs.otherwise ill come over and rub my lulla in your face

Also happens on servers with not many people (in my case: listen server + 2player = 100000 desync)

This is deadly to multiplayer. Please correct.

This makes the multiplayer games unplayable. Needs to be fixed asap.

Any update on this? We can't play like that.

ECID added a subscriber: ECID.May 7 2016, 7:16 PM
ECID added a comment.Aug 24 2014, 7:30 PM

to give you some feedback:

guaranteedUpdates = false;

Fixed the 10000 Desynch bug.

The issues described are still present.

We tested the Perf1 Client + Server on Dwardens Chimera H Server with the above referenced game-mode. We could not get enough people together to test it properly (we imho had 8 at maximum).

> its because of the fact that people need to download a client_binary and it requires effort.

I don't know why this issue isn't at the top of the list in the most up-voted. It's one of the most downer factors that make people abandon the franchise...raise awareness!

Its not happening to everyone.

Busa added a subscriber: Busa.May 7 2016, 7:16 PM
Busa added a comment.Aug 27 2014, 9:44 AM

There are few servers where I haven't desync problems and I am not really sure why. For example, Blackwing server run OK for me (Altis life 5.0).

Confirmed this is happening with my friends and I. Desync goes from 0 to 100k either right from the beginning or a few minutes in, especially when there's AI entities involved.

We're running a listen server with only two other people. On a simple convoy ambush mission, when the convoy arrives all sorts of wacky stuff happens to the other two people, like floating tanks, warping vehicles, and so on.

Bohemia added a subscriber: Bohemia.May 7 2016, 7:16 PM

I added this "guaranteedUpdates = false;" into my server config. The desync seemed to be ok for the past two days and then today out of the blue desync on the server is so bad that players leave after a short while. This is a real problem. I am spending a lot of money for the server rental. Ever since the update the server traffic has declined. When can we expect a real fix for this problem ?

Skulltt added a subscriber: Skulltt.May 7 2016, 7:16 PM

We are seeing the same. Made a very simple mission with just a couple of Hummingbirds, a BLUFOR rifle squad at the airprot and an Opfor rifle sqaud a bit to the west.

Two of us joined the server (no mods running on server or our systems) and hopped in one Hummingbird and ordered the AI into another. Took off in the Hummingbird, and flew around. The other guy in the Hummingbird never saw it take off. We never synced up after that.

Its a serious issue that has broken all our games over the past week.

danczer added a subscriber: danczer.May 7 2016, 7:16 PM

My friend and i noticed the same.

As we tested we found out that the issue not exist for a couple second after mission start.

ECID added a comment.Aug 28 2014, 4:40 PM

We are running RC2 now ('Hotfix126Arma3'). No more issues with Desyncs.

------------------

Steam-beta-key: Hotfix126Arma3
[27.08.2014 18:22:28] -[EUTW]- E.C.I.D.: so, how do i get the proper server binaries ?
[27.08.2014 18:23:00] Dwarden (David Foltyn): https://www.dropbox.com/sh/582opsto4mmr ... ixRC2?dl=0
requiredBuild = 126951; Require clients joining to have at least build 126951 (1.26 Hotfix2) of game, preventing obsolete clients to connect
guaranteedUpdates = false; // Experimental Command by Dwarden

@E.C.I.D.,
could you please provide your exe revision?
We released another update 7 minutes before your note and are not sure if you are on the right version.
Thanks a lot!

ECID added a comment.Aug 28 2014, 6:06 PM

1.28.126.951 --> client
1.28.0.126951 --> Server

It was published yesterday
27.08.2014 18:23:00 by Dwarden on Skype-dedicated server group.

ECID added a comment.Aug 28 2014, 6:11 PM

Steam just downloaded a new RC. 16.2 MB big.

1.28.0.126958 --> client

This update crashes the client. What happens is this:

You select server from server-browser. You join server. You select faction. You select your class. You click okay. Instead of loading into the server you get a CTD.

ECID added a comment.Aug 28 2014, 6:16 PM

Dwarden just posted server-binaries to RC3. Will upload them and let you know how it performs

[18:09:54] Dwarden (David Foltyn): hotfix RC3, 126958 ready
https://www.dropbox.com/sh/582opsto4mmr8d8/AADJZAW3d03pfKpyKJdVNGRca/126hotfixRC3?dl=0

ECID added a comment.Aug 28 2014, 9:38 PM

RC3 now causes client CTDs:
http://feedback.arma3.com/view.php?id=20488

Server binary is stable.

No desyncs noticed (we got to 37 players at peak)

Hey,
we just pushed out an update to 1.28 where the desyncs are fixed. Thank you for participation and patience.
Have a nice day!

Iceman added a comment.Sep 1 2014, 1:34 PM

hey, could you please tell which mission were causing you the desyncs? If it is possible, could you please upload one here?

Thank you very much.

ECID added a comment.Sep 1 2014, 8:19 PM

just uploaded a armaa3s4.zip

includes:
-keys
-mpmissions (3 sample missions of the variant we are playing)
-basic.cfg
-server.cfg
-StartParameters.cfg

ps: this complete package was linked under "additional information" when the issue was created.

Mass-closing all resolved issues not updated in the last month.

Please PM me in BI Forums (http://forums.bistudio.com/member.php?55374-Fireball) if you feel your bug was closed in error.