I'm not sure if you've done this yet, but I wanna suggest removing the health packs. Like I've said before; it adds a chance element to the game, which ruins the whole idea of an SST. The most skilled Squad should win, not someone who was lucky enough to get a few health packs.
The health packs also don't seem random enough. In the old arena with the bridges, 75% of the time they would spawn on the right in clutters. Not sure if it's fixed now though.
I've had a ton of health packs spawn right next to me, while my opponent was kicking my ass but picked up no health packs what so ever. He should have won. Probably dealt way over 100 damage to me.