# Construction Script ticking in editor when skeletal mesh is added \[REPRO PROJECT\]

**URL:** <https://forums.unrealengine.com/t/construction-script-ticking-in-editor-when-skeletal-mesh-is-added-repro-project/359814>\
**Category:** Character & Animation\
**Tags:** bug, unreal-engine, construction-script, editor, question\
**Created:** [June 6, 2016, 12:32pm UTC](https://forums.unrealengine.com/t/construction-script-ticking-in-editor-when-skeletal-mesh-is-added-repro-project/359814 "2016-06-06T12:32:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Slavq](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Slavq](https://forums.unrealengine.com/u/Slavq)\
**Post date:** [June 6, 2016, 12:32pm UTC](https://forums.unrealengine.com/t/construction-script-ticking-in-editor-when-skeletal-mesh-is-added-repro-project/359814/1 "2016-06-06T12:32:34Z")

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1. Set something in construction script, for example add a few meshes with random locations in range.
2. Add Skeletal Mesh Component.
3. The blueprint will start ticking the construction script every frame in editor, which can slow down things massively when construction scripts are more complicated. Just look at the thumbnail, it will generate new locations (or whatever is set in construction script) every tick, resulting in chaotic, fast ‘dance’ in the thumbnail. It is present when hovering mouse cursor over content browser.

Here is a simple demo project: DEMO PROJECT

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**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\
**Post date:** [June 6, 2016, 6:39pm UTC](https://forums.unrealengine.com/t/construction-script-ticking-in-editor-when-skeletal-mesh-is-added-repro-project/359814/2 "2016-06-06T18:39:07Z")

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Hi ,

I was able to reproduce this on my end and have entered a bug report, UE-31673, to be assessed by the development staff.

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**Author:** ![Slavq](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Slavq](https://forums.unrealengine.com/u/Slavq)\
**Post date:** [July 26, 2016, 6:24pm UTC](https://forums.unrealengine.com/t/construction-script-ticking-in-editor-when-skeletal-mesh-is-added-repro-project/359814/3 "2016-07-26T18:24:12Z")

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Hello,

I see that the bug is marked as Duplicate, is it correct? I can’t find any link to the original report:

> **[The Unreal Engine Issues and Bug Tracker](https://issues.unrealengine.com/issue/UE-31673)**
>
> Welcome to the Unreal Engine Issue and Bug Tracker. You can check the status of an issue and search for existing bugs. See latest bug fixes too.

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**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\
**Post date:** [July 27, 2016, 2:31pm UTC](https://forums.unrealengine.com/t/construction-script-ticking-in-editor-when-skeletal-mesh-is-added-repro-project/359814/4 "2016-07-27T14:31:01Z")

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Hi ,

It looks like the note for duplication was not made public, I have adjusted the page to reflect this. The bug report that this duplicated [wasissues.unrealengine.com/issue/UE-30963](http://wasissues.unrealengine.com/issue/UE-30963)