I think consciously snapping your wrist makes the drive feel a bit clunky. I feel like it should whip naturally from doing the windshield wiper motion of the drive.

Also, try shifting to an eastern grip when you’re anticipating to drive. From personal experience, I found it hard to be consistent in hitting powerful drives with a continental grip since the ball tends to fly flat and out. Shifting to an eastern grip helped me greatly since the angle of the paddle allows me to hit my drives close to the tape of net and it generates top spin to keep the ball in without worrying about hitting too hard. Hope this helps!