So I ran a 3 way HD 6770 for a long time and they ran soooo smooth. I hit a wall with new games and fps (tomb raider) so I went and got 2 r9 390x's and I have had no problems with any games so far. at one point I had 2 HD 6770's and they stuttered so much but 3 way was smooth. are the newer cards better as crossfire? because it looks like it too me! anyone ever have multi gpu stuttering?