I don't see how this is a problem with "random environment clutter." It doesn't matter if you're playing Halo 5, Splatoon, Counter Strike or Gears of War know where your opponent is, know the environments around you and the basic advantages or disadvantages you have as you proceed into that 1v1, 1v2 etc.
If that "random environment clutter" happens to be a rock, get to know that rock, where its at and see what you did wrong and if you can use it to your advantage the next time.
This is basic Sun Tzu "Art of War" shit that should be applied to any shooter.
It'd be less of a problem if I wasn't already viewing the game world through a paper towel tube.