Since about the 27th of August (unsure when this exactly started happening), our game (Voyagers) has been getting several reports about very low FPS on high-end machines. After asking some of them to send microprofiler dumps, I have narrowed down the long frame times to the “DynamicGeometryManager :: transcodeVerticesAndCalculateBounds” tag.
I was not able to replicate this issue on my MacBook Air. The users who are reporting this issue seem to be exclusively on Windows machines, with reports from users with both AMD and Nvidia GPUs, but there is not enough information for me to confirm anything.
This is a high-impact issue as our game heavily relies on EditableMeshes to render our custom ocean in-game. We use this module from FlameEmber06 to render the oceans.
We have not had performance issues this major until the 27th. I am guessing this has something to do with a change in Release 688 which released around the same time, but I have no way to be sure. For reference, the section highlighted in red is the part actually performing the EditableMesh methods, so we are relatively sure that this is not due to a recent update/change from our end.
Update: I’ve narrowed down the issue to have occurred on 27/8 at 9 PM GMT. Below is the P10 graph for client frame rate. This issue only affects Computer users, and not the other platforms from what I can see.
I’m seeing this too and it’s making our game essentially unplayable. It doesn’t occur in studio but does occur in-game. I’m running windows. My teammate on Mac doesn’t see it at all.
Likewise, I’ve been seeing this in my game as well. I would like to add that this lag only happens on the client. Studio does not experience any lag.
My specifications are:
CPU: i7-12700k
RAM: 32GB
GPU: SPARKLE intel ARC A770
I can confirm this, I have many Windows users unaffected by this issue as well as affected. This issue seems to impact a variety of CPUs and GPUs so I wasn’t able to narrow that down either.
Has anybody experienced this on an AMD GPU? I’ve only heard of this happening to people using a Nvidia GPU and I’m wondering if it could be related to this issue: FPS Limiter Issues in Roblox Studio
I’m seeing it on a 4060.
I’ve had reports from users with AMD GPUs (as well as reports from people with both AMD and Intel CPUs). This doesn’t seem like an FPS limiter problem as it’s a specific EditableMesh task taking up lots of frame time rather than something you would see in the render thread.
An update on this - I was able to reproduce the error on 688.0, but can’t reproduce it any more on 688.1, which rolled out on August 29th. Are you seeing an improvement in framerates?
It looks like it’s back to normal so I’ll mark your reply as the solution. Thank you for the support! I’ll keep an eye on any new reports that might come in from our players.
It would start out with a small lag to a stop to forever long lag.
This just started happening to me today, and only happens within the Roblox Player. Never in Studio.
It seems to have been fixed for a while (I confirmed with some others as well) but I’m seeing low FPS again as well as a few reports in our Discord server from players.
Im getting reports from my players on PC that the lag has returned. It also seems to be more widespread than before as even the players that didnt have the issue before are now observing it.
