This is always going to be a problem, no matter what, due to the scripted nature of encounters in the game. Content is not designed and can not be designed to be interesting forever so long as encounters are scripted.

Try a DPS in Titan. If you're playing the job well and are generally consistent, you'll notice, say - after 10 clears, that you're doing the exact same thing. If you're very consistent, you're repeating the fight down to the GCD.
Go to one of those players with 50+ clears trying to get their 100 percentile parse - "What GCD are you using during the 2nd tumult after the first uplift?". They'll tell you.
This is different to healers telling you what they use to heal those tumults ... because reasons?

Every job has this problem. It's just that healers are the whiniest bunch.