Can you please adjust Nocturne's ult to reflect the short duration of team fights?

This ability is game breaking, and the main reason Nocturne is currently the second highest win rate jungle.

With the changes to increase it's duration, it lasts the entire team fight and cripples ranged champions. He doesn't even need it as a gap closer, he can literally just press R during a team fight and watch as his team automatically wins, as any ranged champions have to gtfo in case they walk into an assassin or bruiser and get one shot. By the time you can see again, the fight is over and the enemy team is pushing down your inhibitors.

It might have been fine when team fights lasted more than 5-6 seconds, but right now, it isn't. There was absolutely no reason for the buffs it got a few months ago.