# Antialiasing problem : thin light reflections on objects edges look jagged

**URL:** <https://discourse.threejs.org/t/antialiasing-problem-thin-light-reflections-on-objects-edges-look-jagged/30713>\
**Category:** Questions\
**Tags:** antialiasing, post-processing, animation, geometry\
**Created:** [October 11, 2021, 11:47am UTC](https://discourse.threejs.org/t/antialiasing-problem-thin-light-reflections-on-objects-edges-look-jagged/30713 "2021-10-11T11:47:41Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![D13](https://avatars.discourse-cdn.com/v4/letter/d/e9c0ed/32.png) [@D13](https://discourse.threejs.org/u/D13)\
**Post date:** [October 17, 2021, 4:37pm UTC](https://discourse.threejs.org/t/antialiasing-problem-thin-light-reflections-on-objects-edges-look-jagged/30713/11 "2021-10-17T16:37:01Z")

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Yep, I changed to PhysicalMaterial and used shininess settings at 2000 and a clearCoat to try and see if getting more light on the edge would make it stop flickering. It doesn’t. Its across materials. It does smooth out the line anti-aliasing some but the flicker continues. I think its in the lighting itself. It seems like its updating 2 different aspects of the lighting at a different timing.

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