I have only been on Carbon for a few months. I did notice the players are different than the other site I was playing. Notice I said PLAYERS. I had to adjust my game to help become a more winning player than a losing one. I thought wow I can't win here all my premium hands are getting crushed and all that jazz, but like I said I had to evaluate how to play at Carbon. It's not the cards that are beating you it is the other players who for whatever reason just call any 2 cards.
right now their isn't much out there to choose from as far as poker sites. Hope you can over come your downswing. I remember I had a 3 month downswing on another site and almost gave up poker but I never let it beat me and the ups was awesome!! Good luck