the Time Limit for dungeons is unnecessary

[Errant]

i missed my might-be-the-first-100-titan kill because the timer run out (that was a DF group)

Happened to my DF Titan group as well (3% best attempt). I made my own pug the next day and got him down in 2 pulls.

It was always the same 1~3 people making mistakes and costing valuable time, a time extension is no guarantee that these people will have it figured out. 90 Min is enough time for everyone to get themselves sorted out and try to clear the content.