# 800mb blender file to Babylon struggle

**URL:** <https://forum.babylonjs.com/t/800mb-blender-file-to-babylon-struggle/26168>\
**Category:** Questions\
**Created:** [December 19, 2021, 1:42pm UTC](https://forum.babylonjs.com/t/800mb-blender-file-to-babylon-struggle/26168 "2021-12-19T13:42:55Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![carolhmj](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/carolhmj/32/25918_2.png) [@carolhmj](https://forum.babylonjs.com/u/carolhmj)\
**Post date:** [December 20, 2021, 4:38pm UTC](https://forum.babylonjs.com/t/800mb-blender-file-to-babylon-struggle/26168/8 "2021-12-20T16:38:26Z")

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Since you have a city with a lot of buildings, cars and many other kinds of objects which can repeat, instancing: [Instances | Babylon.js Documentation (babylonjs.com)](https://doc.babylonjs.com/divingDeeper/mesh/copies/instances) is also a powerful way to improve performance. I also recommending reading through Patrick’s fantastic post here, he goes through a lot of necessary steps to ensure your scene has good real time performance: [What are the best practices for environment meshes made for Babylon? - #6 by PatrickRyan](https://forum.babylonjs.com/t/what-are-the-best-practices-for-environment-meshes-made-for-babylon/25927/6)

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