"The Art of Strategy"

I agree with 8 minutes (although I don't play very fast myself). If you're developing two heroes, then there's definitely not enough time. But give them 10 minutes, and the matches will be much longer. P.S. And changing anything during the tournament is impossible. IMHO. P.P.S. And if you give both heroes speed, then 8 minutes will be more than enough. But for some reason, no one does that. )))