I just came back so I am a ways from doing endgame stunts myself, but....
I think we need to rethink the test a bit. If we are getting times in the 90 second range, that means the Pylon is only getting 5 or 6 ticks of health... The problem is this, there is a significant difference between 5 ticks and 6 ticks. If you start just after a tick, you will get a significantly different time then if you start just before a tick. Back when we took 4 minutes per fight, this didn't matter so much.
And yes, it is good to be back.