# Unusual grid-like artifact appearing in render \[UE5-01\]

**URL:** <https://forums.unrealengine.com/t/unusual-grid-like-artifact-appearing-in-render-ue5-01/530821>\
**Category:** Rendering\
**Tags:** building-lighting, unreal-engine, UE5-0, question\
**Created:** [April 16, 2022, 8:10pm UTC](https://forums.unrealengine.com/t/unusual-grid-like-artifact-appearing-in-render-ue5-01/530821 "2022-04-16T20:10:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wesviz](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/wesviz/32/549683_2.png) [@wesviz](https://forums.unrealengine.com/u/wesviz)\
**Post date:** [April 16, 2022, 8:10pm UTC](https://forums.unrealengine.com/t/unusual-grid-like-artifact-appearing-in-render-ue5-01/530821/1 "2022-04-16T20:10:11Z")

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Hi everyone,  
Happy to be working on my first visual using UE5 official! Im on a fast-turnaround job, so might not get the answer in time and right now working and patching up in after effects as needed.

I have a simple scene with some sculptures, and basic lights. The lights are animated to strobe on and off.

Everything looks great in the viewport, however when I am rendering I am getting these strange grid-like artifacts appearing and not sure why. Any advice is appreciated, even if late, as I have been through many many render settings and it still remains.

It seems to be in the transition between lights on and off.

Project render settings are -

AntiAliasing - TSR  
Virtual Shadow Maps Off  
Detail tracing  
All Lumens On  
(can respond with any other questions about my set up )

 ![01](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/f/9/af975182384aad4852b00fcfd18c1ddb709630e4.jpeg)  
 ![02](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/b/3/5b3757931978080c4a3cf5dee3077e9602acf7db.jpeg)  
 ![03](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/3/3/333c99ce3203eb3cf0a2815dba8015394a2d1d2b.jpeg)

Thank you for any advice, am eager to learn why this is happening as have been getting great results with UE5 so far.

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**Author:** ![FilmryStudios](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@FilmryStudios](https://forums.unrealengine.com/u/FilmryStudios)\
**Post date:** [May 19, 2024, 10:30pm UTC](https://forums.unrealengine.com/t/unusual-grid-like-artifact-appearing-in-render-ue5-01/530821/2 "2024-05-19T22:30:30Z")

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Did you figure this out ?