In what cases should you use unions?

[NinjaZero54 (Finbald)]

I’m currently making a game with in-doors levels.

I’m simply wondering if it’s more effective to put 6 parts together as a box or use unions to make a box out of a single mesh?
I’ve noticed a number of clipping issues related to unions, and I’m trying to get the best performance in general.

[VegetationBush (FartedWayTooHard)]

Here’s an awesome thread about object optimization:

MeshPart Usage, Performance & Optimizations

Introduction Hello there, I’m BullfrogBait and this is my first community tutorial that focuses on MeshPart usage, performance and optimizations as well as mini-tutorials along the way like how to import and export objects and what all the different RenderFidelities/CollisionFidelities mean. MeshPart optimization is becoming a very important skill as MeshParts are being used more and more frequently as Roblox slowly climbs out of the stone age, with this tutorial you can really cut down …

In brief, use unions if they have a sufficient number of parts and is only used once.

[NinjaZero54 (Finbald)]

Thank you very much! This was very useful. I didn’t know half of these simple tricks :o