Swift on my macbook freezes after a few minutes into a workout since the last update to 1.0.15471. I’m using a Tacx Neo trainer. The other odd behaviour is that all the details on the other riders on the right hand side of the screen start to disappear. So you get the box, but not the details of the rider.
Fortunately I have an iPad to fall back on, but its not as good when using on a TV.