# Performance Issue with StartCoroutine
**URL:** https://discussions.unity.com/t/performance-issue-with-startcoroutine/494043
**Category:** Mobile
**Tags:** Android
**Created:** [January 4, 2013, 9:36am UTC](https://discussions.unity.com/t/performance-issue-with-startcoroutine/494043 "2013-01-04T09:36:48Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@CitrusDev](https://discussions.unity.com/u/CitrusDev)
#### Post date: [January 4, 2013, 9:36am UTC](https://discussions.unity.com/t/performance-issue-with-startcoroutine/494043/1 "2013-01-04T09:36:48Z")
Hi,
I have a clock witch runs in a Co routine (1 sec delay ) and
one other Co routine (0.5 sec delay ) with iteration to update points ( sporadic and displays a particle system )
nothing else is moving or something
if I update the player points the clock’s co routine and the points one will halt ( also the particle system )
I don’t know why; there are 16 draw calls and ~ 300 Tris
Please help
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### Author:  [@CitrusDev](https://discussions.unity.com/u/CitrusDev)
#### Post date: [January 4, 2013, 10:10am UTC](https://discussions.unity.com/t/performance-issue-with-startcoroutine/494043/2 "2013-01-04T10:10:12Z")
found …
it depends on the playing sound oO