Grand arena championship timeout

I have had this issue in the past on unfortunate not too rare but not too prevalent occurrences. This most recent really got me peeved. In a very close arena championship bout (the first "working" one since its first failure) with my last viable offensive team I set to engage, click battle...... Loading... Loading... Loading... Let it roll for over 10 minutes... Loading... Minimize then reopen window "paused".... Loading... Now with my last viable team lost and accounted as a solid defense for my opponent. I'm left hear wondering why I even waste my time with this game and why my frustration actually has the pull to have me make an account to write this...