Blade Pro 2017 (GTX 1080 4K) power drain on intensive graphic usage

Hey, I am noticing that when I use my blade pro for gaming or other intense graphic usage it will drain my battery even while plugged in. I can't figure out why this is happening. We have tried driver updates, we bought another power adapter, and even just navigating around (like in Unity editor) it seems a bit slower than it used to. Has anyone seen this before? Is it hardware? Or a setting? Please help!