We are happy to inform that a new UVPackmaster tutorial has just been published :) The tutorial presents an advanced functionality of the packer: Heuristic Search - improve tightness of your UV map in Blender in seconds:
As usual the tutorial was created for you by magnificent Markom3D.
UVPackmaster 3 is an efficient and fully-featured UV packing engine for Blender. It is the most efficient UV packer out there in terms of packing on CPU, but it also provides a Cuda accelerated variant of the algorithm. When running on a GPU, it significantly outperforms all other packers available.