whenever i load GR 7, i get crackling. Ive read the first 25 pages of manual but need clarification. CPU and sidechaining in manual. So, ive been loading NI into midi track, then GR 7. To sidechain, i load GR 7 into the bottom space where it says "drop/drag effects here?" Sidechaining should fix the crackling? Also, lowering the input will redece crackling, but which input do i turn down, the top one in the header, or the input in the Rack,? How do i reduce CPU? My meter in upper right hits way over 100%. How do i reduce CPU and sidechain correctly?