If you work with me (especially athletes) you'll know that the Hexbar deadlift is one of my favorite exercises for building lower body strength and power.
When the concentric (or upward) movement is executed, we are often given cues such as brace the core, keep the back flat and drive through the hips.
All good internally focused cues to remember, but the best one I've found is the simple external cue of "drive the ground away from you."
Next time you step inside the glorious Hexbar, give it a try. I think you'll find the weight moves with a little more speed and even a little less effort.