An addendum to my previous bug report about Roblox's CPU usage, and internal script issues.

[Steven007101 (BloxyReimu)]

I have the micro profiler dumps on previous posts, but to recap. Roblox’s internal scripts are causing extreme frame drops, and CPU usage spikes that it causes massive slowdown for like up to 5-6 seconds after a decent amount of time in game like 15-20 minutes. I have the micro profiler dumps on my previous post, and this bug has been an issue for weeks now with no update from you guys, also the micro stuttering is really annoying too, and is probably connected to this bug.

Roblox CPU usage has been through the roof recently (My previous post about this bug)

microprofile-20260705-025403.zip (5.2 MB) (Different deployment, but still not the issue here.)

microprofile-20260705-172117.zip (1.1 MB) (In production, but it still happens there)

System information:

Thinkpad Yoga 11e Laptop

Images of the issue at hand

Edit: This bug occurs due roblox trying to load an animation that does not exist mainly due to a memory leak caused by lots of script garbage data build up. Not anything to do with deployment servers or anything. This is truly an issue on Roblox’s end.

Expected behavior

I am able to play for more than 15-20 minutes without extreme lag/frame drops.

A private message is associated with this bug report

[Steven007101 (BloxyReimu)]

Bro I literally can’t play roblox because of this man. Why are you so slow to fix this? Like please fix this bug.

[Android7User]

does this also happen on empty baseplate with only core scripts?

[Steven007101 (BloxyReimu)]

I think it does, but not until after a long time, but it happens most frequently in games with a bit of scripting. It’s basically any game that has quite a bit of scripts causes the lag.

[Steven007101 (BloxyReimu)]

OH SHOOT THIS IS THE REASON WHY. Roblox is trying to load an animation that does not exist.

[Steven007101 (BloxyReimu)]

For you guys coming in here, yeah I found the root cause of all the fps issues going around, just look through the bug report to see.

[ertukonya112233 (yeIIoween)]

This is not the root cause of the recent performance issues.

@ertukonya112233

I don’t think this is relevant. The conclusion in your post has nothing to do with the issue here. The animation errors have existed since forever, and the animation given in the developer console seems to be from Karinriine, formerly the owner of Eternal Towers of Hell, which fits with the tower game in that screenshot. The issue here occurs in any game. That is not an issue on Roblox’s end.

[Steven007101 (BloxyReimu)]

If it is not because of garbage data build up then idk what is.

[Steven007101 (BloxyReimu)]

I literally have a stream where this bug is happening to me https://www.youtube.com/live/SbXsJPSy99A

[Steven007101 (BloxyReimu)]

Let’s reopen this alright. My question has not been answered