Running High Sierra 10.13.6. In the second 'level' (with the Sandstorms), there's about a 20% chance that a sandstorm will freeze the game. As these happen approximately every 30 seconds, this has totally broken the flow of the game.

I am running on a Dual-CPU 2 x 3.06Ghz 2012 Mac Pro with AMD Radeon RX580 8Gb and 96Gb of RAM, so specs are not an issue - the game itself is.