Twinmotion 2016 was Windows-native. Running via Boot Camp on a Mac requires meeting the above Windows specifications.
The good news: The update is actually than the initial 2015 release. If you were running Twinmotion 2015 smoothly, you should be fine. However, the update raises the floor slightly for integrated graphics users. twinmotion 2016 system requirements upd
To run Twinmotion 2016 effectively, your machine needs to meet these baseline and recommended specifications. Component Minimum Specifications Recommended Specifications Windows 7 / 8 (64-bit) Windows 10 (64-bit) CPU Intel Core 2 Duo 2.4 GHz / AMD Athlon X2 2.8 GHz Quad-core Intel or AMD, 3.0 GHz+ System RAM 8 GB – 16 GB Graphics Card (GPU) 1 GB VRAM (e.g., GTX 460 / HD 6850) 4 GB VRAM (e.g., GTX 770 / R9 280X) DirectX Version 11 Version 11 or 12 Storage 5 GB available space 5 GB available space Key Performance Tips for 2016 Twinmotion 2016 was Windows-native