I have found that this version of TDA hangs for some considerable time before performing a function. For example selecting a previous activity on the dashboard it takes a while to take me to the activity.
Tonight I selected to ride a workout I had created (slope) and decided to play one of Phils videos in the background. After selecting the film I clicked to start and nothing happened. I waited clicked again, nothing. It took several attempts before TDA kicked into life.
At the end of this workout I clicked to save and it automatically went into cooldown mode. After my cooldown I clicked on stop and nothing happened. Clicked on it a number of times but nothing happened. In the end I exited TDA by closing it down.
I also had problems when I decided to ride a Majorca film before my created workout. Instead of being taken to the profile screen and clicking on 'start' I got a blank screen and the circle of death. I navigated back to the movie selection screen and tried again. This time it worked.
The previous beta didn't present such problems.