2015 Yukon Denali with a 6l80, hunts for gears when going WOT while already moving

So Ive got my personal 2015 Yukon Denali with a 6L80 (early build) that has a little PE tuning and some trans adjustments. Nothing crazy, just some BlueCat adjustments. If I'm rolling around 50 or 60, and I jump on it, the truck kinda freaks out a little, almost like everything kinda just cuts out, downshifts one gear, doesnt like it and downshifts again. I'm going to assume that this is a torque management issue, but just wanted to touch base with anyone with insight before i started making those adjustments. If someone needs it, I can send them the tune.

Post the tune and a log of this happening.