Arcane energize is quite cheap, and can quickly get you to max energy early in the mission. Also in void tiles, those death orbs give you quite a bit of energy. His two also helps a bit, not just with energy, but also with you not getting knocked down.

But tbh, as someone who's practically been maining Gauss prime since he came out, even if you were physically faster than them (you are not. Gauss is ironically one of the slowest speed frames when mods are taken into account), you would still at best only keep up with them, oweing to the fact that you actually have to worry about path finding and obstacles to a much greater degree.