# Is there any point in using ellipsoids for Instances in terms of performance?

**URL:** <https://forum.babylonjs.com/t/is-there-any-point-in-using-ellipsoids-for-instances-in-terms-of-performance/55908>\
**Category:** Questions\
**Tags:** instances, movewithcollisions\
**Created:** [January 11, 2025, 3:40pm UTC](https://forum.babylonjs.com/t/is-there-any-point-in-using-ellipsoids-for-instances-in-terms-of-performance/55908 "2025-01-11T15:40:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Lemcat](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/lemcat/32/44469_2.png) [@Lemcat](https://forum.babylonjs.com/u/Lemcat)\
**Post date:** [January 11, 2025, 3:40pm UTC](https://forum.babylonjs.com/t/is-there-any-point-in-using-ellipsoids-for-instances-in-terms-of-performance/55908/1 "2025-01-11T15:40:53Z")

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I have an idea to make regular instances for all my game objects including movable objects even those, that will move with moveWithCollisions. Is it a good idea to move ellipsoids of Instances or they are not made for such using? Or is it the same as moving ellipsoid of just regular not instanced objects?

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**Author:** ![Deltakosh](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/deltakosh/32/26635_2.png) [@Deltakosh](https://forum.babylonjs.com/u/Deltakosh)\
**Post date:** [January 13, 2025, 5:42pm UTC](https://forum.babylonjs.com/t/is-there-any-point-in-using-ellipsoids-for-instances-in-terms-of-performance/55908/2 "2025-01-13T17:42:10Z")

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Hey there! It depends 😉

what is your goal? can you use physics with Havok?

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**Author:** ![Lemcat](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/lemcat/32/44469_2.png) [@Lemcat](https://forum.babylonjs.com/u/Lemcat)\
**Post date:** [January 13, 2025, 7:18pm UTC](https://forum.babylonjs.com/t/is-there-any-point-in-using-ellipsoids-for-instances-in-terms-of-performance/55908/3 "2025-01-13T19:18:02Z")

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I’m making a 2D game, using just one plane (XY), orthographic camera. I don’t use physics like Havok, I move my objects with moveWithCollisions as it looks enough for now and I hope will always be enough in this project 😃 So I wanna think about such optimizations before the project structure will done.

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**Author:** ![Deltakosh](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/deltakosh/32/26635_2.png) [@Deltakosh](https://forum.babylonjs.com/u/Deltakosh)\
**Post date:** [January 13, 2025, 11:55pm UTC](https://forum.babylonjs.com/t/is-there-any-point-in-using-ellipsoids-for-instances-in-terms-of-performance/55908/4 "2025-01-13T23:55:36Z")

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with that in mind, yes I think it makes total sense to add the ellipsoid and use that to move your instances. That’s totally worth it