TakeScreenshots sometimes throwing DeviceAgentException

[trevoriancox]

Sometimes I am able to get all 4 screenshots that I've configured. Other times, just 0, 1 or 2, then Xnapshot.Screenshots.TakeScreenshots () throws:

Exception: Xamarin.UITest.XDB.Exceptions.DeviceAgentException
Unable to contact DeviceAgent

Maybe a timeout that can be extended?

Feels like it's a bit more reliable if I close the simulator before starting. I'm running from Studio on macOS with Debug configuration (less luck so far with Release or the command line).