# Why the shadows appear wavy?

**URL:** <https://forums.unrealengine.com/t/why-the-shadows-appear-wavy/353121>\
**Category:** Rendering\
**Tags:** Shadows, shadows-problem, unreal-engine, directional-light, Lighting, UE4, question\
**Created:** [April 6, 2016, 7:07am UTC](https://forums.unrealengine.com/t/why-the-shadows-appear-wavy/353121 "2016-04-06T07:07:30Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![anonymous\_user\_2ed5b4c7](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_2ed5b4c7](https://forums.unrealengine.com/u/anonymous_user_2ed5b4c7)\
**Post date:** [April 6, 2016, 10:06am UTC](https://forums.unrealengine.com/t/why-the-shadows-appear-wavy/353121/2 "2016-04-06T10:06:32Z")

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Hi!

Resolution of Lightmap 64 is very low. Try to increase it to 256 or higher.

Both objects has Lightmap 64

 ![85524-lightmap_lo.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/8/d/18d4767a27c541354d769fae5a96f3d61efd3547.png)

Both objects has Lightmap 256

 ![85525-lightmap_hi.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/9/8/c987648b71329808d41259272023171f7f15b183.png)

If you have more questions about lights and shadows, that please read this troubleshooter.

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