Hi All,  I am using a mid 212 Macbook Pro ( i7, 8gb ram, Intel 4000 hd) and i am experiencing cracking on my guitar input sound . I have read numerous forums instructing to set the Midi to 48000Khz on the speaker and Cable and played with the audio latency but i still get crackling. Sometimes and i can start the game and the sound is ok but fter about 5 mins the crackling starts . Is there anything else that i can change, i have seen windows soluntions to amend the Rocksmith INI file, is there