Particles displacing or misrendering

Bug Reports Engine Bugs
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1

I think this just started happening today, but I’m having really unusual issues with particle emissions being unloaded, displaced, or not rendering properly. It only happens ingame, not in studio, but particles (particularly those that are Emitted) just displace or disappear at random. It seems to particularly happen with particles emitted using ParticleEmitter:Emit().

My system information:

  • AMD Ryzen 7 5800 XT
  • Nvidia RTX 3060
  • 48 GB RAM
  • Windows 11

This seems to happen in many games with particles, not just my own. Clips shown are from my own game Magic Mayhem, Grand Piece Online, my unlisted boat game, and I believe Gensokyo Arena

*Audio is disabled in these clips because it’s mostly me and friends screaming and yapping in a VC.

Edit: Converted to links. Roblox won’t render my catbox videos since they’re too large.
Clip 1
Clip 2
Clip 3
Clip 4

It happens in other games, not just my own. For other people too. Regardless of player count, server age, etc.

Expected behavior

Particles should not disappear.
Example of what it should look like: https://i.gyazo.com/1c46fbf21890635c96d70b9947532ac8.mp4

Note: The particles stutter and appear weirdly because they tend to whenever I alt tab into studio.

28 Likes
2

Also noticed this on my own game a bit, thought I was going crazy.

5 Likes
3

This bug made me go insane today :sob:

4 Likes
4

Can confirm it’s happening in my game as well

4 Likes
5

Happening in studio for me too

3 Likes
6

bump Happening to me in game & in studio too

5 Likes
7

I can confirm this is happening, and its actually so similar to a particle bug I helped to debug years ago that the repro file I used to replicate it still works.


particle_repro.rbxl (75.5 KB)

I just took a freemodel gun and gave it particles on bullet hit. As you can see in the clip, the particles all cleared after a certain amount was spawned.

Other strange behavior i’ve noticed this time, however, is particles having too fast or too slow lifetimes.

7 Likes
8

yo i thought it was only me due to the lack of reports on this

3 Likes
9

Having this issue as well. I was looking for a post about this because I thought I was crazy.

2 Likes
10

Currently experiencing this in my own game within studio. Guess I’ll do VFX tmrw :smiling_face_with_tear:

1 Like
11

i got it too, just like fabuss, particles just give up and replaced by another particles in game?..

2 Likes
12

Definitely an issue from the last 1-2 days.
cloudy valley, rainy valley, and Multicrew Tank Combat are all on an older (server?) version (older than 2 days) which doesn’t have this issue.

In studio (no rollback, bad behavior):


Live server (rollback, correct behavior):

6 Likes
13

can confirm that its also been happening to me xd (and in studio this time, not just ingame)

2 Likes
14

I am experiencing a similar issue with particles mis-rendering. In this video, you can see rainfall and their splash particles being partially overwritten by other particle effects used in the experience. The rain splash particles are somehow being overwritten, despite no outside intervention in texture assigned to them. This started happening only recently.

4 Likes
15

Im having the exact same issue, my burned ground particle (parented to an attachment, set in pelocityperpendicular and emitted via a script using Emit()) are spawning in a random orientation, and despawning faster than the set lifetime
Particle bug roblox

3 Likes
16

This is still happening, I had thought that I messed up something but i’m glad i’m not the only one :rofl:

5 Likes
17

yep, exact thing happening to me

glad to know i’m not going insane hahaha

1 Like
18

i was about to tear apart my game to find out what i was doing wrong, thankfully its just an engine bug

d9577b739ea11f07f7cbf72dfb8b3faa

4 Likes
19

Hello, thank you all for the reports.

I am reverting the flag that is likely the culprit. Can you check back in an hour and let me know if you are still experiencing the issue?

10 Likes
20

Same issue. Any VelocityPerpendicular particle that appears on the ground (For example, inside an attachment -3 studs downward parented to the HRP) will jitter alot (i.e. random rotations). I hope this gets patched.