Windows 8.1 64bits, dual Geforce 780
Tried on several version
Short description of error
I've been working with MeshDeform recently and I notive some heavy lost of performance with the Mesh Deform Modifier. It makes the skinning workflow a lot more time consuming...
Something, it's working fine then you change some vertex position of the mesh deformer or the binded mesh and then you have to wait a lot longer. Between 4 to 30 minutes with a precision of 6. I never had that kind of probleme before.
So I tried to isolate the problem by making a simple .blend file a try it on several blender release.
Here is the .blend:
and the time it's take to bind the mesh with different blender version:
2.70 -- 00:16
2.75 -- 00:13
2.76b -- 00:11
2.77a -- 02:39
2.78c -- 03:12
2.79 -- 03:53
2.79aRC -- 00:40
So there is a big lost of performence with blender 2.77a
It's getting a lot better with 2.79aRC but not has great has with 2.76b
Exact steps for others to reproduce the error
open the .blend file and press "Bind" in the MeshDeform Modifier