Particle emitters don't always despawn when tank is empty, especially with low tank amounts.

[VanCastar]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When setting the particle emitter to be deleted when out of particles and having low amount in the tank (escalates at sub 10 amounts), the particle emitters don't get deleted but will stay active indefinitely until manually purged.

Steps to reproduce

Make particle emitters spawn with low tank amount and delete when tank is empty.
The amount of particle emitters will keep increasing and will on a longer run choke up all resources tanking the FPS.
Even when stopping the particle emitters spawning the lingering emitters are still there not getting deleted automatically.
You can manually delete the emitters though.
Check the amount of particles on scene with debug mode in editor.

Example program to the bug.
Lower the particle emitter tank value to get even more dramatic drop in performance, 1-3 particles in the tank drops the performance in about 10 seconds.
BugTest.zip

GDevelop platform

Desktop

GDevelop version

5.3.188 (editor full version: 5.3.188-13cf9b1d0b1ad06da2fff21ff366886922081b9c, core version: 4.0.99-0-release)

Platform info

*OS (e.g. Windows, Linux, macOS, Android, iOS)* Windows 10 / 11

Additional context

No response

[D8H]

Thank you for reprorting this and for the test project.

The issue happens when a particle lifetime is less than 1 frame (0.017 seconds at 60 fps). The issue needs to be fixed but you should probably use a value of at least 0.05 seconds (3 frames at 60 fps or 1 frame at 20 fps) otherwise the particle would not really be useful.