# Nav Mesh is not generating properly with level streaming

**URL:** <https://forums.unrealengine.com/t/nav-mesh-is-not-generating-properly-with-level-streaming/489016>\
**Category:** World Creation\
**Tags:** sub-level, nav-agent, unreal-engine, question\
**Created:** [September 21, 2021, 1:50am UTC](https://forums.unrealengine.com/t/nav-mesh-is-not-generating-properly-with-level-streaming/489016 "2021-09-21T01:50:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Interlvper](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Interlvper](https://forums.unrealengine.com/u/Interlvper)\
**Post date:** [September 21, 2021, 1:50am UTC](https://forums.unrealengine.com/t/nav-mesh-is-not-generating-properly-with-level-streaming/489016/1 "2021-09-21T01:50:28Z")

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I have one Nav Mesh Bounds Volume that is placed in the Persistent Level along with the Recast Nav Mesh. None of my sub-levels contain a Nav Mesh Bounds Volume or a Recast Nav Mesh. The pawn using the Nav Mesh works properly when testing on a new level with all of the same settings.

 ![349070-navmeshbounds.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/b/7/bb74c5aa07724014cf7860187de4ae4390d3f175.png)

 ![349091-recastnavmesh1.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/2/f/12ffb1f2618cd9d3186717fbbb12a0450418552a.png)

 ![349092-recastnavmesh2.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/9/4/3/94323f96115cac9697f358a75d79912a4285a33b.png)

 ![349095-navmeshsettings1.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/0/b/b0b1f6fbb98d2ecbd1e954ff163b76f053a87712.png)

 ![349094-navmeshsettings2.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/3/a/43a4ec7d759cd4594c7d8262e59503454bb45653.png)

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<div class="post-metadata">

**Author:** ![Interlvper](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Interlvper](https://forums.unrealengine.com/u/Interlvper)\
**Post date:** [September 21, 2021, 8:28pm UTC](https://forums.unrealengine.com/t/nav-mesh-is-not-generating-properly-with-level-streaming/489016/2 "2021-09-21T20:28:15Z")

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So it seems I have found an at least temporary solution. I created a new level with world composition and created two sub levels with basic geometry. After moving a new nav mesh into the Persistent Level with my current settings and letting it generate its recast, I was able to copy that nav mesh and paste it into my current level and have it function properly.

I’m not entirely sure how or why this works. I tried multiple times to create a new nav mesh in my current level but it never worked. I would love to hear potential explanations as to why this may be happening so that I can understand the issue better.