I've recently started using a treadmill in the gym.
However, I've had a couple of difficulties getting the suggested workout to behave smoothly.
Usually, I select "treadmill" on the watch, then I see the suggested workout for the day, but when I press "start", immediately afterwards the watch tells me that I am going too slowly, as though it thinks I am recording a normal outside run, not on a treadmill. A few times, I have managed to quit, then restart somehow, and it works fine second time around.
Yesterday, I had the same problem, but this time I couldn't work out how to find the suggested workout after I exited and started again. This was a pain because the suggestion was an interval run, so I had to remember the laps manually, and I forgot to hit the button at the change of laps.
It's getting quite frustrating to be fiddling with buttons on the watch, at the same time as starting a warm-up on a treadmill, and trying to set the treadmill speed manually.