I noted that the blender mesh deform modifier binding is slow on larger meshes,
I propose we accelerate it using BVHTree find_nearest_range()
there is a similar patch applied by brecht
https://developer.blender.org/rBS984e9f9cc8eee131c6602b326e588d2903eda90a
II would like to base the patch off of, but I could use some direction (this is my first patch)