Does having multiple parts in a sword really cause performance issues?

I know ideally you want to create a single mesh and have it be the whole sword with a texture.

But I recently was watching a Live Stream from Kensai666, and he went into 3 of the swords and they all had like 6 - 9 parts inside each sword.

(Game was Sword Burst 3)

I know the top person AbstractAlex is really strict about performance and stuff. So why would they put so many parts in a sword?

If you had for example 1 sword that had 1 mesh with 400 verticies as a sword, and another sword maybe 9 parts that = 400 verticies total

(literally same sword just imported more seperately) Is there really a performance difference? I’m sure there is, but how big is it really?

(One thought I had before posting, if you don’t use 1 mesh, there’s 1 advantage I thought of making them seperate. You don’t need to upload a texture, and use can use roblox’s coloring/materials/etc instead

Maybe using having them seperate with no textures, makes up for the performance difference it would have being 1 mesh with a texture? Maybe Not.

Has anyone properly tested any of this before? I would love to hear anyone/everyone’s thoughts/results about this.

Screenshot from livestream:

Multiple Parts

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No. Well yes, theres a really small performance change. Doesn’t matter how many particles it has.

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