I don't have that DVD-A and haven't hooked up the 5.1 cables yet to play DVD-A so can't comment if the recording is bad.

One easy thing to try would be swapping BOTH ends of the cable between main and surround (ie swap main L with surround L at both ends) so if the cable is causing the crackling your mains would crackle instead of the surrounds.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8