Server replication freezing

[apenzijncoolenleuk1 (Apenz1)]

Players have been reporting server-side lag and freezes happening in my game since a couple days ago.

It’s unclear to me how this happens but I suspect streaming and network bandwidth.

I don’t see major differences in server performance analytics if I compare the current numbers to what they were before. If anything those stats actually improved!

Game link: Savannah Life | Play on Roblox

[wpled]

I’ve also been having this issue lately. It wasn’t happening at all last week.

[Reisdro_08]

Salutations!

Thanks for bringing this to our attention.
A ticket was filed, but we need more information about it.

Is this issue still happening at your end?
If so, please provide a microprofiler file so we can be able to investigate it right away!

If you need assistance or info on how to get and send this file, please refer to the following:

@Roblox

If Roblox is lagging or running slowly:

• Include a microprofiler dump (please use .zip file format) and your system information.

These log files may contain sensitive information, so it’s important they’re NOT posted publicly, send them to Logs / Crash Dumps / Other Bug Files.

Thanks for understanding!
Have A Nice Day!

[Absumption (michael)]

Wanted to bump this.

We ( Combat Warriors | Play on Roblox ), have been seeing a drastic increase in Out-Of-Memory server crashes since the Game Server Update on 3/12/26 at 12:09 PM EST. Players have been reporting seeing a highly visual and immediate increase in lag for core replication ( character movement/physics, etc ).

We’re unable to actually capture Heap Snapshots or a brunt of server side performance information beyond a Microprofiler Dump as requesting it via the F9 console actually causes the server to crash.

We’ve submitted a few server-side MicroProfiler dumps through direct messages to the group for reference.

[apenzijncoolenleuk1 (Apenz1)]

Hi

I’m not sure what you want me to send. It’s server networking performance. Afaik microprofiler dump is purely client-sided.

Also personally I don’t notice the issue, sure there’s an occasional hiccup but that can be accounted for with regular networking delays. The problem that I want to report is that some users experience constant periodic freezing every x seconds (see private DM attached video).

Thanks

[heedicalking]

The same is happening in our game, and has been reported here as well. I can only assume that Roblox is throttling servers without telling us, as this has been happening to every game I’ve spoken to that hosts >40 players per server.

Sudden surge of replication tags correlated with massive transmitted server data in my game

Hi, In a game I work for we have noticed a massive surge of “Total Data KB/s” on the server-side (sometimes reaching up to 40 MB/s) correlated with replication/streaming tags in the server-side microprofiler along with a new tag we’re unfamiliar with, SysEventLoop.runOnce(), which is present in 100% of our frames and we couldn’t find any documentation for, labeled under the “RbxTransport” group. [image] We noticed this issue after our most recent game update. However, we have been unable to d…

Unexpected server performance degradation scaling with players

I run a combat community (similar to NW) where we have ~250 player battles per server. To achieve this, optimisation has been done to allow for it to work smoothly, and has for many months. Recently, I have identified (and i believe other communities with a similar scale also have) server instability and extremely poor performance scaling with the amount of people ingame. This is despite any changes made by me to the experience, as i did not update the place until this issue started appearing. …

[alphavoyager]

Hi,
We fixed a server-side CPU issue around March 26th. Can you please let me know if this issue is still occurring?

Thanks!