# Some of my physics objects fall through my landscape actors

**URL:** <https://forums.unrealengine.com/t/some-of-my-physics-objects-fall-through-my-landscape-actors/471811>\
**Category:** World Creation\
**Tags:** collisions, collision-detection, landscape-problems, unreal-engine, Physics, Collision, Landscape, question\
**Created:** [September 23, 2020, 3:20pm UTC](https://forums.unrealengine.com/t/some-of-my-physics-objects-fall-through-my-landscape-actors/471811 "2020-09-23T15:20:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Unisink2020](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Unisink2020](https://forums.unrealengine.com/u/Unisink2020)\
**Post date:** [September 23, 2020, 3:20pm UTC](https://forums.unrealengine.com/t/some-of-my-physics-objects-fall-through-my-landscape-actors/471811/1 "2020-09-23T15:20:32Z")

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Changing mip and thickness haven’t fixed this. Anyone know the real solution? [Version 4.25.3]