I am also having the same issue with a MacBook Air (13-inch, 2017), 1.8 GHz Intel Core i5, 8 GB 1600 MHz DDR3, Intel HD Graphics 6000 1536 MB. I just purchased the game this evening 8/31/2019. I will need to request a refund on Steam if the issue is unresolved. Please email me or reply if you have a timeframe on when this will be corrected. Thank you.
Hey there! We are aware of the issue and are working on a fix (took us some time to get the correct hardware to reproduce this on), but we don't have a specific time frame for a fix for this. If you want, definitely get a refund