Windmill model aerodynamic/wind optimization

[viforium]

I have created a windmill for a showcase game I’m currently working on. I wanted to create the showcase without using scripts, so I have used other services such as FluidForces, HingeConstraints and etc.

For the windmill model I wanted to use FluidForces to turn it. (Also, I’m aware it is currently not available to publish the game.) I am just not sure how I should optimize the windmill model. I created 2 designs. Left is the first one, right is the second one.

1. Design
4 Union parts welded to a single part:

2. Design
1 Union, no welds:

Their decomposition geometry (Mesh Optimization Tools plugin by @Maximum_ADHD):

For the left one FluidFidelity is set to UseCollisionGeometry for all 4 unions. CollisionFidelity is set to Box.

For the right one FluidFidelity is set to Automatic for the union. CollisionFidelity is set to Default.

I am planning to use the model around the map multiple times, therefore I want to optimize it. This is also my first post, so if I post this to the wrong category, sorry about that.
I would like to hear all ideas. Thanks for reading.

[baseparts]

You probably won’t have to optimize this; Roblox’s physics system is very performant already. I suggest not overthinking it, and if at one point you do notice lag, deal with it then.