You can call this a coward’s move all you want, but if you care about winning, it’s one of the best strategies.
Once your team has 10 or more crystals, and the 16-second countdown to victory begins, head to the bottom of the stage where your team spawns. This forces the opponents to go on an all-out offensive and consolidates your firepower into one place.
Not only will it take more time for the other team to reach you, thus killing off precious seconds on the countdown, but if you do die, your teammates will be close by to pick up any crystals you may have dropped. Plus, you’re right near your spawn point, so getting back in the fight will happen more quickly.