I really dislike all the rollers and this one is the worst of them all
None of them seem balanced in the risk vs reward stakes whereas the guns for the most part are
For example...
The Dyanmo throws a tidal wave of ink which seems to be inescapable if you're in the middle of the radius and kills in one hit it seems to also throw ink at a similar range to most of the automatic guns. Needless to say it requires no effort or skill to use and has little risk associated with using it
You are going to have to get good, and learn to exploit the weapon's weakness. Believe it or not, the Dyanmo Roller is easier to beat in 1v1s, than the other rollers; Ink Brush aside... Throwing ink is a high risk, high reward. It takes a while to do, you have to aim a bit over someone's head and lets not forget about the cool down. All you have to do, is pay attention, swim towards them as they throw ink, and then they die, while they are still in cool down. There is a little more to it then that, but the average Dyanmo player will fall to this tactic, often.
@Kiritora Can give some insight on the type of tactics that work well against her Dyanmo.
A Dyanmo Roller should be playing a passive-aggressive style anyway. I'm seeing talk about killing and what not... The Dyanmo isn't per say about killing, I think that is a common misconception. It's about supporting. This is emphasized by the amount of time it takes to throw ink and how slow you roll. They should be picking off the stragglers, while focusing on calling echolocation as much as possible. Tenacity and Special Charge Ups are your friends. Once Cold Blooded becomes meta though, I don't know how viable this weapon will be, but that's another topic on its own... But anyways, if your team wanted someone to get kills, they would have chosen the T.Splattershot or a Kraken Roller.
@Grafkarpador I have used the sprinkler in A rank lobbies, and it still works wonders. Taking out a well placed sprinkler in the high rank lobbies, can easily get you killed.