updateGeometry (fast clusters) consistently lags horribly

[AwesomeXForLife (Whimsical)]

Sorry to necrobump this, I am now suffering from this. Was this ever considered resolved? Currently having issues when parenting to workspace in a game with alot of humanoids/skinned meshes.

[Judgy_Oreo (DisplayName)]

Are the skinned meshes directly under the workspace? There’s a bug report where a staff member responded and said that that creates one giant skeleton under the workspace consisting of all the skinned meshes, and that they should be parented to their own models instead:

Skinned Meshes Flickering

Hey, have you tried putting each skinned mesh in its own model? When we have skinned meshes in the workspace, they sadly end up all being part of the same giant skeleton, so any updates to the size of one part forces the skeleton to get rebuilt. Each model however, has its own skeleton, so if I change the line where clone is parented to clone.Parent = Instance.new("Model", workspace). I think the issue is mitigated. Changing the size of a part tho does force the skeleton to be rebuilt and it’s…

[LightBeamRays]

Hi there! Since this is quite an old issue, I’m looking to verify whether we should consider it resolved or increase scrutiny on this. Are you still facing this issue in your experiences?

[ItzAidfoplays390]

I am still getting some lag spikes related to FastCluster Invalidation and UpdateGeometry in the game MTC 4 for example, it’s much worse on my Android Mobile phone (Samsung Galaxy M12) than on my Windows laptop.

microprofile-20241008-161742.html (1.4 MB)
microprofile-20241008-161619.html (1.4 MB)

This is on my Windows laptop:-

microprofile-20241008-192924.html (7.3 MB)

[LightBeamRays]

Thank you for the details @ItzAidfoplays390! Would you kindly be able to share a placefile with us, in which we can reproduce these profiles, please?

[ItzAidfoplays390]

I wish I would be able to but I can’t reproduce this bug ever on a private server and the devs can’t on studio either. It just appears to happen on public servers with a lot of players, and it’s also not guaranteed that it would always happen there. I think there are certain gameplay conditions that lead to these spikes happening, like maybe getting your tank hit in the game, or having part of it damaged or completely destroyed. I am not really sure what exactly is causing these spikes though.

[LightBeamRays]

Thank you! Hmm - we’ll need a way to consistently reproduce the spikes/bug on our end to be able to investigate the issue. Knowing that it’s only happening on public servers is helpful.

While waiting for an engineer to free up to look into this, if you or other devs end up finding ways to consistently reproduce the spikes, could you please let us know your repro steps? That would help our team greatly.

[ItzAidfoplays390]

Yeah, sure I definitely will inform you if we find a way to consistently reproduce the spikes and if there are any other information that we could add that could help narrow down the issue.