The charge attack causes movement speed to be greatly reduced while charging, similar to other guns' charge attacks. It is a huge pain when chain charging the Catalyzer. I think that it could be buffed by granting movement speed equivalent to most bombs / swords (faster movement speed) while charging.
I also think that its charge attacks should benefit from damage bonus!!! errrrrrrg this needs looked into. I personally think that one of the reasons it may not benefit from damage bonus is because other people can explode your own orbs, so it is probably something like all orbs are treated the same among all players. The second reason that I am thinking about is maybe it is a bug.
IF the reason that is doesn't benefit from damage bonus is because all orbs are counted as the same from all players then perhaps, to make the programming part less awkward, we could make it so that other players cannot set up orbs on a monster that already has orbs from a different player?
I agree with the first point. It's weird how some swords, the weapons with the most powerful charge attack in the game (looking at you brandish), don't cause you to slow down at all, while the catalyzer and bombs all have movement speed penalties while charging.