I’m experiencing consistent stuttering in Roblox games INCLUDING a literal empty baseplate with no scripts or assets, due to CPU-side thread spikes.
I’ve been monitoring the MicroProfiler and I’ve found that the Foreground Thread randomly spikes up to 40+ms, causing visible frame hitches. This happens across multiple installs, user profiles, and even on a completely clean system with no background tasks or overlays.
System Info:
Motherboard: GIGABYTE Z790 EAGLE AX
CPU: Intel Core i7-14700KF
GPU: Gigabyte RTX 5070 Ti 16GB
RAM: 32GB DDR5 5200MHz (XMP Enabled)
OS: Windows 11 Pro 24H2 (Activated + Fresh install via Bootable Drive)
What I’ve Already Tried:
Disabling CPU E-Cores
Disabling C-States / SpeedStep / ASPM in BIOS
Clean reinstall of NVIDIA Game Ready Drivers
Running Roblox in clean boot (no background apps)
Disabling all overlays (Discord, NVIDIA, Xbox)
Clean new Windows user profile
Testing on both .exe version and Microsoft Store Version of Roblox
Expected behavior
Expected Behavior:
Roblox should maintain consistent frame pacing, especially on high-end hardware, and the foreground thread should not spike up to 40ms on an idle baseplate
I’m glad to see I wasn’t the only one experiencing this issue. Roblox has yet to address it, and I’d recommend downgrading your Roblox client if it’s causing significant problems. If you need the hash version that prevents stuttering, feel free to ask.
As annoying as this issue is in microprofiler, do you experience this anywhere else? Are the same stutters present if microprofiler is off (and has been off since you started the client; i.e. it was never running). We have some measurement overhead that happens in the microprofiler foreground thread so while we address this it shouldn’t impact non-microprofiler run sessions.
Oh sorry, I assumed this was the same issue as mine. Whenever I have microprofiler off, I am still experiencing lag spikes, but they do not seem to be as intense as my first bug report
I still experience this even without microprofiler, it has been an issue for weeks. It was fixed last build then it was seemly broken again on the latest build
I would like to add that when i try to use roblox studio it runs butter smooth, the issue is only within the roblox client, same goes for the windows store version, hopefully this helps the team to look into it further and pinpoint the issue.
We have some changes going in targeting the 683 release, while won’t fix the issue, will help us narrow down where it is. When this release lands please retake the MP captures!!
It seems to me that the stuttering has significantly decreased on the current ZBeta version (0.683.0.6830775) as my FPS sometimes drops to around 165 from 240 for much less time than it used to drop to around 40 FPS before.
Updated my Roblox to latest and I’m still experiencing the same problem (maybe there’s a slight improvement but my framerate keeps dropping), is there a way I can send detailed info about my issue or does this info seem enough? Looking forward for your reply.
If you try the ZBeta build (0.683.0.6830775) (version-b56286e823e04c25) the issue will be almost non-existent. However, the stuttering still happens on the latest production build (0.683.1.6830778) (version-2a06298afe3947ab).
If you could post MP dumps for both versions that would be very helpful. The TS::postStep and TS:::preStep fields are the instrumentation added for 683; if the stuttering doesn’t involve these we would like to see that.
microprofile-20250724-183125.html (4.1 MB)
Here’s an MP dump with the issue for the latest production build (0.683.1.6830778) (version-2a06298afe3947ab)
(I’m assuming this is what you’re asking for, I haven’t done this before)
