# Performance issues when rendering large number of nested components

**URL:** <https://discuss.emberjs.com/t/performance-issues-when-rendering-large-number-of-nested-components/7616>\
**Category:** Performance\
**Created:** [March 24, 2015, 11:21pm UTC](https://discuss.emberjs.com/t/performance-issues-when-rendering-large-number-of-nested-components/7616 "2015-03-24T23:21:57Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![jamesshore](https://avatars.discourse-cdn.com/v4/letter/j/53a042/32.png) [@jamesshore](https://discuss.emberjs.com/u/jamesshore)\
**Post date:** [March 29, 2015, 8:36pm UTC](https://discuss.emberjs.com/t/performance-issues-when-rendering-large-number-of-nested-components/7616/3 "2015-03-29T20:36:34Z")

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This sounds very similar to the issue I faced in [Reviewing Ember and wondering about performance issue - #4 by jamesshore](http://discuss.emberjs.com/t/reviewing-ember-and-wondering-about-performance-issue/7638/4). You may be able to fix it by reusing your {{#each}} array as shown in that thread. It brought my rendering time down from ~300ms to \<1ms.

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