So, when I started playing Crucible I was pretty terrible. I had a negative KDR and my teams lost more often than we won. I checked a week after starting. My Combat Rating was something like 92. The last couple of weeks, I've done better. My kills and assists have gone up, my deaths down; KDR has improved to 1.08, and my score per match has improved. My winning percentage has also increased, so I now win more often than lose, and Destiny Tracker says my win ratio is now in the top third, and that's despite frequent Caterpillar disconnects. I hit more precision kills than ever. I even topped the scoreboard a few times. I went from being bad to being average. For someone who's usually bad at shooters and is playing far away from most hosts, I feel like that's decent. My Combat Rating has dropped to 88. What exactly is this thing based on? RNG?