Instructor Ding's team had dejectedly given up on pioneering the Tier 5 group dungeon; obviously, given the current situation, it's not just about scraping by with the T5 group dungeon anymore—it's even questionable whether they could still clear the normally stable Tier 4 group dungeons.
While the tank and healer professions hadn't changed much and their strength remained the same as before, the DPS had been significantly nerfed.
Compared to before, the team's DPS had dropped by at least 40%.
DPS is always the scarcest thing in a raid team; most of the time, the main reason for failing to defeat bosses is simply not having enough DPS.
The tank isn't holding up? You can directly beef up their gear, and once it's sufficiently upgraded, they'll eventually hold up.
The healers can't keep up? You can bring one or two more healers; generally speaking, it's relatively easy to solve that problem.
But if there's not enough DPS, then you're truly short, no matter what you try.