# My NavMesh does not allow movement in all its area when scaled up 

**URL:** <https://forums.unrealengine.com/t/my-navmesh-does-not-allow-movement-in-all-its-area-when-scaled-up/2690610>\
**Category:** Programming & Scripting\
**Tags:** ai-move-to, unreal-engine, navmesh, question\
**Created:** [January 8, 2026, 3:57pm UTC](https://forums.unrealengine.com/t/my-navmesh-does-not-allow-movement-in-all-its-area-when-scaled-up/2690610 "2026-01-08T15:57:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![later\_than\_soon](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@later\_than\_soon](https://forums.unrealengine.com/u/later_than_soon)\
**Post date:** [January 8, 2026, 3:57pm UTC](https://forums.unrealengine.com/t/my-navmesh-does-not-allow-movement-in-all-its-area-when-scaled-up/2690610/1 "2026-01-08T15:57:53Z")

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I have a map that i use to test the ai\_move\_to node and so far it was working great. Today i decided to scale the map up a bit to test movement on hills and such.

After i scaled the floor and navmesh, my character could no longer move in certain parts of the floor, even though they are depicted as green on the editor navmesh.

Can some one please help me figure this out? I can’t imagine this is actually how it’s supposed to work

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**Author:** ![BRGEzedeRocco](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/brgezederocco/32/1216890_2.png) [@BRGEzedeRocco](https://forums.unrealengine.com/u/BRGEzedeRocco)\
**Post date:** [January 9, 2026, 6:33pm UTC](https://forums.unrealengine.com/t/my-navmesh-does-not-allow-movement-in-all-its-area-when-scaled-up/2690610/2 "2026-01-09T18:33:54Z")

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Hello @later_than_soon, Welcome to forums!  
You could try the following:

1. First force a NavMesh rebuild:  
Go to Build → Build Paths. In many cases this forces a full navigation rebuild and fixes situations where the NavMesh looks correct (green) but the character cannot move across the entire area

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/a/b/5ab01761ea46a1010b9b6aef96946123924382ce.jpeg)

1. If that does not work try recreating the NavMesh from scratch:  
Delete the NavMeshBoundsVolume  
Delete the RecastNavMeshDefault  
Add a new NavMeshBoundsVolume to the level

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/2/6/3261940fb844b38ab6110e1a3b83b07b21c6de33.png)

Sometimes the NavMesh ends up in an inconsistent state especially after scaling geometry or the level and recreating it fixes the issue without changing any other settings

1. As a last step you can try adjusting Navigation Mesh parameters  
Go to Project Settings → Engine → Navigation Mesh

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/f/6/2f63d7ef88e33394df98cf491308a44f5e1b6ddc.png)

There you can review values such as Cell Size Cell Height Agent Radius and Agent Max Slope which often affect navigability

Hope it helps!