Just as an FYI, LUX has just pre-released our new PHI2 protocol that greatly improves on the original version

PHI2 has been designed to be FPGA and ASIC resitant...and also includes a 30-60% power reduction, and lower temps.
Full release won't happen until we do a planned fork and introduce Segwit, Smart Contracts, POW/POS/MN reward changes and a few other things
Full details on our discord if anyone wants to check it out -
https://discord.gg/DrbfbtzPlenty more to come from the LUXcore team as well
