UVPackmaster 2 For 3DS Max

Have a look at UVPackmaster 2, a fully-featured UV packing engine also as a plugin for 3ds Max. The tool was written in C++ giving the ability to perform packing on CPU, as well as on Cuda-enabled GPUs.

Features:

• Efficient UV packing algorithm
• UV islands area measurement
• Overlapping UV islands detection
• Heuristic search algorithm
• Packing for a non-square texture
• Add new UV islands into an existing packing
• Accurate pixel margin calculation
• Overlapping UV islands lock
• Grouping UV islands
• UDIM support
• Advanced heuristic algorithm
• Packing on GPU
• Heuristic search on all devices simultaneously (CPU and all GPUs)

Please note that purchasing the UVPackmaster plugin for 3ds Max will grant you a lifetime license, plus access to all future updates of the plugin for free.

You can learn more and get the tool (there are several options available) here.