# Small shadows flickering

**URL:** <https://forums.unrealengine.com/t/small-shadows-flickering/2628655>\
**Category:** Rendering\
**Tags:** Shadows, unreal-engine, flickering, Lighting\
**Created:** [August 3, 2025, 5:19pm UTC](https://forums.unrealengine.com/t/small-shadows-flickering/2628655 "2025-08-03T17:19:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Fenyx\_Invincible](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Fenyx\_Invincible](https://forums.unrealengine.com/u/Fenyx_Invincible)\
**Post date:** [August 3, 2025, 5:19pm UTC](https://forums.unrealengine.com/t/small-shadows-flickering/2628655/1 "2025-08-03T17:19:22Z")

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Hi, community.  
I’m experiencing a strange shadow flickering issue and have no idea how to fix it. It happens during the day/night cycle as the sun moves across the sky, and it only affects small shadows.

If I zoom in on the object with the flickering shadows, the issue disappears. But once I zoom out, the flickering starts again.

![shadowsFlickering](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/f/f/2ff6c7499da7fbe251d5015460a90934b36c9bb9.gif)

Does anyone have any ideas on how to solve this?  
Thank you!

UPD: r.Shadow.RadiusThreshold 0 solves the issue, but how to find root cause ot it? ))

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**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\
**Post date:** [August 4, 2025, 6:40am UTC](https://forums.unrealengine.com/t/small-shadows-flickering/2628655/2 "2025-08-04T06:40:55Z")

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Try turning TSR off 🙂

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<div class="post-metadata">

**Author:** ![Fenyx\_Invincible](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Fenyx\_Invincible](https://forums.unrealengine.com/u/Fenyx_Invincible)\
**Post date:** [August 4, 2025, 5:57pm UTC](https://forums.unrealengine.com/t/small-shadows-flickering/2628655/3 "2025-08-04T17:57:53Z")

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Thank you for the answer ) I’ll check it out.  
For now, I fixed the issue using r.Shadow.RadiusThreshold 0.01 without any noticeable performance loss. I still need to compare it with TSR disabled.