Running on a Retina MacBook Pro 15" 2015 16GB RAM, 500GB SSD w/ AMD Radeon R9 M370X 2GB and running macOS High Sierra 10.13.1 and the 64 bit client runs ok. I can get 60+ FPS if I lower the graphics setting and lower the resolution to 1280x960. Hoping for further optimizations and tweaking by the developer of the 64 bit Mac native client, and I hope they will support Metal 2 for better Mac graphic performance. Keep up the good work guys!