Overtime is a god awful concept

It favors specific champs over others and gives unfair advantages. For example Vayne vs elise. Neither has items both are level 2. Vayne is half health elise is near full so are spiderlings. Elise can win that until overtime hits because vayne gets to trigger the ability far faster. Same with something like Kass vs a tank. The kass would not get the shield to win until the overload. If you wanted to avoid ties just make the round last till the fight ends. If you wanna avoid 2 braums with a warmogs fighting each other then give a 1 minute time limit instead of 30 seconds before a tie hits. It should not guarantee you a win just because time has passed. That is nothing to do with the player just poor design. Also it only takes effect after the next auto attack which makes it even worse.