Do meshes reduce lag?

I’m pretty sure through reading threads and stuff, that many people have said that meshes cause much less lag than models. Is this true? I’m having some lag issues right now and want to know if doing something like this will reduce most of it.

If you make the meshes yourself then it might. Roblox creates very weird meshes for their parts and unions and that might degrade performance

This completely depends on how much vertixes and triangles and stuff the mesh uses.

Let’s say I have Mesh A and Mesh B. Mesh A has 5000 polygons and Mesh B 2000, ofcourse, Mesh B will cause less FPS drop and lag because it has less polygons.

Models are kind of just “collections” of parts and other things, so those won’t lag a lot, only if there is stuff inside that make it lag.

It’s kind of hard to explain this in text, maybe do a Google search on this.