# Visual bug

**URL:** <https://forums.unrealengine.com/t/visual-bug/379332>\
**Category:** Platform & Builds\
**Tags:** unreal-engine, UE4, question\
**Created:** [December 15, 2016, 4:16am UTC](https://forums.unrealengine.com/t/visual-bug/379332 "2016-12-15T04:16:05Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Yakmark](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Yakmark](https://forums.unrealengine.com/u/Yakmark)\
**Post date:** [December 15, 2016, 4:16am UTC](https://forums.unrealengine.com/t/visual-bug/379332/1 "2016-12-15T04:16:05Z")

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Hey guys,

I have a strange visual bug (some sort of flickering cubes) in unreal 4.14. The problem that this bug also appears on high res screenshots. Do anyone know how to solve this problem? Sorry if my question is dumb, but I am still in a learning process and have this problem in every tutorial scene.

 ![118777-screen+shot+2016-12-14+at+8.14.24+pm.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/2/a/62aa3fa8371369af6cfd5d906c825a4990e57b92.jpeg)

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**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\
**Post date:** [December 15, 2016, 9:36pm UTC](https://forums.unrealengine.com/t/visual-bug/379332/2 "2016-12-15T21:36:45Z")

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Hi Yakmark,

Can you post your system specs or DxDiag if you’re on windows? I don’t see the same issue when I open this same map on my machine, so hopefully if it’s a system specific thing it’ll be more noticeable to see what’s going on.

Thanks!

Tim

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**Author:** ![Yakmark](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Yakmark](https://forums.unrealengine.com/u/Yakmark)\
**Post date:** [December 15, 2016, 10:31pm UTC](https://forums.unrealengine.com/t/visual-bug/379332/3 "2016-12-15T22:31:01Z")

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Hi Tim,

Thank you for quick response! Here is my system specs:

**macOS** Sierra  
Version 10.12.1

**MacBook Pro (Retina, 15-inch, Late 2013)**

**Processor** 2.3 GHz Intel Core i7

**Memory** 16 GB 1600 MHz DDR3

**Graphics** NVIDIA GeForce GT 750M 2048 MB,  
Intel Iris Pro 1536 MB

Sincerely,

Mark

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**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\
**Post date:** [December 16, 2016, 3:51pm UTC](https://forums.unrealengine.com/t/visual-bug/379332/4 "2016-12-16T15:51:14Z")

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Thanks, Mark!

We have the exact same machine for our team. I was able to reproduce this and submitted the ticket here: [Unreal Engine Issues and Bug Tracker (UE-39865)](https://issues.unrealengine.com/issue/UE-39865)

Looks like the issue is from having multiple reflection captures overlapping that is causing the artifact.

-Tim

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**Author:** ![Yakmark](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Yakmark](https://forums.unrealengine.com/u/Yakmark)\
**Post date:** [December 16, 2016, 8:40pm UTC](https://forums.unrealengine.com/t/visual-bug/379332/5 "2016-12-16T20:40:47Z")

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Thank you, Tim!

Mark