# Particle system LOD does not resume emitting when re-enabled with command r.DetailMode

**URL:** <https://forums.unrealengine.com/t/particle-system-lod-does-not-resume-emitting-when-re-enabled-with-command-r-detailmode/353956>\
**Category:** FX\
**Tags:** quality-settings, unreal-engine, question\
**Created:** [April 12, 2016, 10:38pm UTC](https://forums.unrealengine.com/t/particle-system-lod-does-not-resume-emitting-when-re-enabled-with-command-r-detailmode/353956 "2016-04-12T22:38:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anonymous\_user\_67d533e8](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_67d533e8](https://forums.unrealengine.com/u/anonymous_user_67d533e8)\
**Post date:** [April 12, 2016, 10:38pm UTC](https://forums.unrealengine.com/t/particle-system-lod-does-not-resume-emitting-when-re-enabled-with-command-r-detailmode/353956/1 "2016-04-12T22:38:18Z")

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It is possible to set a particle system detail mode. It is expected that particle system will not be rendered if console command r.DetailMode is set to below its required level.

![](https://d3kjluh73b9h9o.cloudfront.net/original/3X/1/d/1d5643e874a2fbe845a505d4dc8f42468b811b12.png)  
“r.DetailMode 0” will disable rendering particles if a particle system has its required detail mode set to high.

If the particle system is re-enabled using “r.DetailMode 3”, the existing particles will continue where it left off, but does not emit any new effects. The last particles/effects fades away and the particle system ends.

r.DetailMode is affected when modifying performance settings in game. Same issue occurs here.

 ![](https://d3kjluh73b9h9o.cloudfront.net/original/3X/9/c/9c99f9e997a1a60e5d991fbfd30ffe37ffc1e830.png)

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**Workaround:**

“Activate” the particle system whenever r.DetailMode is modified to continue particle emission.

![](https://d3kjluh73b9h9o.cloudfront.net/original/3X/4/8/481ac7e99bc1094c83328368acb4e20e29584f19.png)

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**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\
**Post date:** [April 15, 2016, 9:05pm UTC](https://forums.unrealengine.com/t/particle-system-lod-does-not-resume-emitting-when-re-enabled-with-command-r-detailmode/353956/2 "2016-04-15T21:05:02Z")

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Hi ,

This has currently been reported in our JIRA system with ticket number UE-21421.

Thank you for taking the time to report this.

Tim