At the 2017 Unibet Open Bucharest €1,100 Main Event in Bucharest, Marius Pertea (the winner) took 5 minutes to decide if he wants to fold or call an oponnent all in. It was a very difficult situation.I watched some of it live on twitch.
In 5 minutes you can do a lot of things, such as going to the bathroom, having a cup of coffee, taking and stretching, among other things. More in my opinion this interval is of paramount importance.
For 5 minutes, if it's time to have a bite, I have time to make a salad, warm up the food, make tea and bring everything to the computer. And sometimes 5 minutes is not enough for an urgent matter.
I have 5 minutes of break very little, enough to make only tea or coffee and go to the bathroom and quickly smoke, but 10-15 minutes for much more could be done!