After someone else found out you can blow up the starting barricades faster, I combined that with tech that was believed to be xbox only, (it's much harder on pc) to move up at the start. The light bridge, despite the warthog getting caught for half a second, can't really be fixed imo, since to have a consistent speed, you need to arc towards the terminal more, losing a small bit of time. There was one set of grunts that the hog got caught on, so if they could be avoided there might be a time save of 1 second, though it's very rng and there were many other rng elements that had to happen just to get this run to work. After an hour of trying this was the only 3:00 I could get.