Games Randomly Stop Working / Character Appears Frozen to Other Players

[LwgoVlr]

Temporary workaround: Games Randomly Stop Working / Character Appears Frozen to Other Players - #9 by LwgoVlr

I am experiencing an issue where Roblox games randomly stop syncing correctly during gameplay. On my screen I can still walk, move my camera, see other people walking and chatting, but most gameplay functions stop working. For other players, my character becomes completely frozen and appears disconnected, with no movement or interactions replicating.

This happens across multiple games (Blox Fruits, Volleyball Legends, Tower Defense Simulator) and feels like a desynchronization issue. Rejoining the server temporarily fixes it, but the problem eventually occurs again, and none of the troubleshooting steps I’ve tried have resolved it. After some time in this desynced state, I am often disconnected with the error message “Your connection timed out.” My internet connection remains stable when this occurs.

System Information: AMD Ryzen 5 7600X 6-Core Processor, 32.0 GB RAM, NVIDIA GeForce RTX 5060

This makes multiplayer games unplayable, as other players cannot see or interact with my character properly.

Expected behavior

I expect my character’s movement and actions to stay fully synchronized with the server, so that other players can see me moving and interacting normally at all times, without freezing or desyncing unless I actually disconnect.

Video evidence of the issue: https://www.youtube.com/watch?v=A6Ed80q4kZs

Apparently this is only happening in South America (São Paulo) Servers.

Logs:

2025-12-28T21:40:25.916Z,8560.916016,5f40,6,Error [DFLog::NetworkSenderStallTracking] DidntSend: For DataSender for 601 frames
2025-12-28T21:40:25.933Z,8560.933594,2af4,6,Error [DFLog::NetworkSenderStallTracking] TransportPushback: Transport-level push back in DataSender for 601 frames

[i8cheese (Cheese)]

Out of curiosity, could you check one of your log files when that happened and search for something related to “RakNet”?
Want to see if it could be the same issue I’m facing in my game:

RakNet/RemoteFunction calls failing to get sent/returned | Client stops replicating to the server

A player in my game started noticing some of their moves would freeze them and not be executed, when that happened their chat messages also couldn’t be seen by others in the server, and even remote functions invoking to the client wouldn’t get returned. How it works in my game: Some moves still uses RemoteFunctions to be executed, the player invokes it to the server with a table, like {“Attack1”} They are executed, which yields the remote, and then returns to the player a table containing {co…

[LwgoVlr]

I deleted my Roblox folder while trying to fix this. If it happens again, I’ll check, but it’s probably the same bug because I can see everyone, but scripts stop working (probably remote event) and other players can’t see my chat

[LwgoVlr]

2025-12-28T17:47:16.104Z,1026.104004,2310,6,Error [DFLog::NetworkSenderStallTracking] TransportPushback: Transport-level push back in DataSender for 601 frames
2025-12-28T17:47:16.104Z,1026.104004,2310,6,Error [DFLog::NetworkSenderStallTracking] DidntSend: For DataSender for 601 frames
2025-12-28T17:47:29.030Z,1039.030396,09ac,6,Verbose [DFLog::RakNetMissingPingPong] Time since last (ms): ping recv 4987, ping sent 5006, pong recv 25010, pong sent 4987, mtu ping recv 4987, mtu ping sent 5006, mtu pong recv 25010, mtu pong sent 4987, pkt recv 11, pkt sent 11, reliable recv 11, ack recv 20320, oldest unacked send 39989, oldest unacked recv 1039029 | MTU size: 1200 bytes
2025-12-28T17:47:29.030Z,1039.030396,09ac,6,Verbose [DFLog::RakNetMissingPingPong] Other stats: dead false, outgoingWaiting true, acksWaiting false, netCapacity 65536, resendBuf msg1, resendBuf bytes9, loss last sec1, limitedByBw false, outputQueueSize 0
2025-12-28T17:47:29.030Z,1039.030396,09ac,6,Verbose [DFLog::RakNetMissingPingPong] Decryption failed 40054, invalid dhf 40054, incoming ack deserialize failure 40054, ack range bad 40054, incoming nak deserialize failure 40054, nak range bad 40054, on got packet failed 40054, failed create internal packet 40054, dropped packet 40054
2025-12-28T17:47:29.030Z,1039.030396,09ac,6,Verbose [DFLog::RakNetMissingPingPong] Ack stats: time since last ack sent 11, max ack bitstream size 41

[i8cheese (Cheese)]

Yeah, it seems to be related, hope the engineers see this soon

[Bguhyhgf]

Please please fix this engineers it is stopping me from playing Roblox

Interestingly a vpn fixes it for me… but this whole issue only started happening a few weeks ago

[Striker0007 (Sos)]

its happening to me and some people i know so frequently on any game, its definitly something related to the south america servers and its game breaking, roblox please fix this.

[i8cheese (Cheese)]

Seems to not be related to south america servers entirely, I’ve had a case where it happened in an european server, and the player was from Iran

[LwgoVlr]

It appears that using WARP from 1.1.1.1 prevents this issue (Credits to @beautificatiion for finding this out).

However, using WARP may carry some risk. If Roblox uses IP-based enforcement, a rule violation by one user on a shared WARP IP could affect other unrelated users. It is not confirmed how much Roblox relies on IPs for bans.

USE AT YOUR OWN RISK.

[KitSuneT_Owl (TwentyFrost)]

Venho enfrentando o mesmo problema desde dezembro de 2025, mesmo que a internet esteja perfeitamente funcional, tanto no computador quanto no celular ocorrem esse problema em qualquer experiência. Se você usou WARP 1.1.1.1, poderia me dizer se isso corrigiu o problema?

[LwgoVlr]

It did fix the issue for me, but it also introduced other problems (not sure if they’re related to WARP). The Roblox app sometimes has connection issues on the home screen, and launching Roblox from the website sometimes results in a 403 error

[ValkNoobYT (Figure)]

The same thing happened to me, but now its fixed too, i think. im from São Paulo - Brazil

[ValkNoobYT (Figure)]

For me its even harder, it occurs in EVERY SERVER OF EVERY LOCATION FOR ME, I often play asylum life in european servers because it has less peolpe so i dont have to wait in queue for a role. please fix roblox.

[nowptt6662 (Dome)]

yup, same location. Seems like it’s going to take some time for them to fix this issue, since roblox doesn’t care that much for brazil. I have no ideia if warp can help us in this case but i don’t wanna risk using some unknown application

[ValkNoobYT (Figure)]

same for me, dont want to use any external sources, like they simply dont care brazzilians.

[Sourcemapper]

This issue was fixed a few months ago - see my note on the other thread: RakNet/RemoteFunction calls failing to get sent/returned | Client stops replicating to the server - #4 by Sourcemapper