While I do understand your frustration, nothing is worse than at 1 or 2% hitting a hard enrage but it's something that I'm glad is there otherwise fights would be too easy.
I think I mentioned earlier there is a huge difference between being able to handle mechanics, and being able to handle them AND play your class and maintain/maximise your DPS/Healing/position as a tank, and that's why I always say it comes down to more than just 'reading up on the fight'.
The good news is, if you can handle the mechanics, the more comfortable your DPS get on the encounter, the better their DPS will become.
We always see it in our group, the first time we cleared t10 we were right on the enrage, DPS wasn't great and hovering between 350 being the lowest and 450 the highest, it was chaos.
Now we generally do 8 minute runs with at least 540+ DPS on all the DPS unless someone dies (or the bard has to manasong for any reason), of course gear has helped but even before they got their weapon the DPS was going up and up during every single fight, overall they just got a lot better, then of course there are little tips and tricks to help them out, like using cover on the monk during T13 if he gets an earthshaker so he can ignore it and keep those stacks, or the way you position nael during P3 so that the melees are always able to be on top of her not wasting any uptime and being able to push the phase quicker.
Keep on Deepsing! :D
