Just an update to the forum, the problem was found and resolved.

I'd used the included shims to install the muzzle device that serves as QD to the suppressor. Although I'd followed the instructions, the muzzle device was off-center enough to effect the bullets when the suppressor was attached. I still don't see any physical marks, thank goodness. I removed the muzzle device, and switched to using the accu-washer system. Once I had it torqued on again, I reshot my rounds. Both supers and subs are shooting with minimal POI shift, maybe 1.5 MOA at the most.

Ultimately, it came down to an installation error, I probably over-torqued it and mangled some of the shims. Thanks to everyone that replied. :)