I play on PS4, and let me tell you, it is quite difficult tracking people that I’m trying to melee with him, using a controller. Also seem to sometimes have someone run in front of me just when firing off a flash grenade. Edit: Oh right, almost forgot the solve for this issue: Communication for when you want to fire, or the blatantly convenient helix talent for that entirely.
Lastly, and this isn’t really an issue, just a minor grumble about, the ult basically shuts down immediately if you touch anything when launching upwards.
To get to the bottom line about that, make sure you have open space when using his ult.
Anyways, like I said, tracking/aiming melee strikes with a controller is crazy hard, especially when I’m trying to be aware of everything else around me. Wait for the opportune time to grav rush into an opponent and start hacking away.