3D Coat does indeed have some wonderful retopo tools! But I've been learning a lot about retopo in Blender, and it really does let us do a good job! It might make sense to use an algorithmic retopo tool like Instant Meshes 3D Coat makes my machine run hard even when there is nothing on the screen. It's kind of weird that way. Very interesting, cool program. Creating in Blender and doing retopo and textures in 3D Coat is an expected workflow for 3D Coat. But Blender keeps getting better.