Anyone else notice Mac graphics slowdown (very jumpy) after last week’s update. Zwift is basically unusable!
Running latest MacOS Sierra ver 10.12.3 on a Mac Mini 2.8 GHz Intel Core i5 with 16GB 1600 MHz DDR3 ram and Intel Iris 1536MB graphics. With Zwift 10.1 (11).
Reinstalled the software and no better result. 
Thanks!
I see you submitted a support ticket, so we’ll work with you further there to resolve this. After checking your logs, I can say this is almost certainly specific to your setup.
If anyone else is having similar issues, please open a support ticket via bit.ly/zwiftsupport and send your game logs. This thread will now be closed.