Roblox silently loses connection without notice or rejoin option

I have experienced issue from Russia, Crimea, ISP is Miranda.

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Hey @HooferBevelops ,

Apologies – we don’t have any confirmed fix yet. We are hard at work on this issue, though. Thanks to all the contributors of this thread and for those who have shared logs.

Please DM me and/or @asdfiji123 with any logs you are able to gather from yourself/users who experience this issue.

Thank you,
PlumJar

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absolutely constant stream of disconnections today, absolutely constant. the longest game i got today had to be like 15 minutes

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my average game time still barely scratches 20 minutes (if im lucky) but its usually 15.

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0.654.1.6540477_20241228T205627Z_Player_8956E_last.log (151.6 KB)
newest log, match lasted ~12 give or take a few, which has been the norm this week.

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I also came across this issue however no one got back to me, yet. If there is anything I can do to help please feel free to contact me.

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0.654.1.6540477_20241229T092647Z_Player_94763_last.log (78.8 KB)
newest log, there were only 8 people in the server and the ping was perfect. despite this i disconnected after only 5 minutes and 20 seconds

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I’ve been playing item asylum and other games lately, as you said games with a lot of data flow are my biggest issues, especially unoptimized games like the ones with 2 player chained obbies, I noticed that lowering my MTU seems to have MOSTLY fixed the issue? I get hang ups but I successfully reconnected around 1-2 minutes later several times in item asylum which confused me to no end.

The way I got here is by searching random reddit threads and forums, I noticed that sending ICMP packets/pinging beyond a certain size(in my case 1452 bytes) times out regardless of destination(except for gateway), while on my other slower ISPs where I don’t crash it works completely fine even above 1452 bytes.

So far today I’ve been playing for around 2 hours with only 1 hang up so far, wish I could spare money for a different router or something to test more however I can’t afford that.

Hope this helps people and the devs as it has always been a big issue and even though I no longer crash I hate the random ping spikes and 1 minute reconnects. (An issue only on roblox)

Note: I am aware someone pointed out changing MTU didn’t work for them, but it seems to be a per person thing atp, whether ISP or LAN issue

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also never happens in private servers no longer how long I play, smaller servers do last significantly longer but still disconnect.

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have also noticed that tweaking settings so its less graphics intensive (i.e ingame settings, roblox graphics quality) can help prolong play time in certain places. have been thinking if high usage and intensity could also have something to do with the disconnecting issue. i tried it today and in a game where i had been disconnecting after 15 minutes every day i managed to reach a play time of 30 minutes did not disconnect and left on my own (this week and last week i have been timing play sessions) hope this helps.

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This keeps happening to me too, and I found this in the log: 2025-01-03T22:26:42.493Z,652.493652,1eb8,6,Verbose [DFLog::RakNetMissingPingPong] Time since (ms): last ping 25055, last mtu ping 650459, last pong 24765, last mtu pong 650459, last reliable recv 22112, last ack recv 22112 | MTU size: 1396 bytes

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joined a game to try out a new update, tried to join like 4 times and not a single game reached 3 minutes before i got disconnected.

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Issue still persists to this day, it definitely depends on the ISP as I just changed internet and the problem started happening. Technically I don’t know whats the “factor” in the ISP that makes this bug happen. That would be interesting to know.

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i dont know if its just me, but i feel like its really intensified this past month. other days i wouldnt give it much thought but now i am lucky to even scratch 15 minutes. except for very late at night like 2am-ish where it improves alot but at that point its just useless because its late.

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experienced an issue and disconnecting around 10 minutes here a log: 2025-01-08T06:55:30.273Z,995.273438,2a74,6,Verbose [DFLog::RakNetMissingPingPong] Time since (ms): last ping 120615, last mtu ping 980954, last pong 120125, last mtu pong 980954, last reliable recv 118582, last ack recv 118605 | MTU size: 1396 bytes Log file: https://devforum.roblox.com/t/ping-freeze-2/3360113/1

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I also got this recently twice in a row while playing Notoriety. One time it briefly reconnects and my frozen inputs get sent one after another, and then freezes again while still being able to fire my gun (client handled) and move around

Though I didn’t know when it froze since I only noticed it when I tried to interact with a Guard but can’t do so

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Lowest time - 3 minutes (can often happen 3-4 times in a row)
Average - 15/18 minutes
Above average - 20/25 and beyond

longer games like 55 - 1 hour games usually only happen to me later at night at like 2 to 3 AM, as for why this happens I dont really know, is there an explanation to this?

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It’s crazy how this issue is there since last July and it’s still not being fixed yet

As for me, it usually happen after roughly 45 minutes - 1 hour after I joined an experience, and it’s definitely not an Internet nor a computer issue since I have pretty much the optimal equipment to play roblox decently

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not just last july, thats when this forum was made. this issue has been around since atleast 2021, unfortunately it didnt seem to get picked up as most of the people talking about them were in comment sections or reddit threads that ultimately went nowhere and ended up going unnoticed.

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Thank you to everyone who sent logs and posted details to this thread over the holidays;

In order to iterate more quickly on this issue, I am enrolling certain users from this thread to a special Roblox version which will allow us to gather more logs and enable fixes as soon as we find them.

If you check your Roblox logs and see a line saying the channel is “ZphantomFreeze”, you will know that you are enrolled.

Thank you for your patience and for your assistance in chasing this tough bug.

EDIT:
For transparency, these are the users I have enrolled to the special binary. Please DM me any new logs you have from sessions that you experienced the issue! (typically, the log file will contain the RakNetMissingPingPong log)

@Robloxwhattheheckman @IdontPlayz343 @Hunter_officialFR @thecoolmagnet11
@bvetterdays @Artzified @Tryrokes @Stundalle @gtecv52 @Robloxplayer12346789
@SpiritOfExploiters @shr2mp @GamEditoPro

15 Likes