quick example:
no reset at dredge) 30 min + 30 min + 60 min = 120 min
reset at dredge) 30 min + 30 min + (30 min + 30 min + 30 min) = 150 min
this is assuming 30 min for every non-dredge fractal and 60 min for every dredge fractal. your numbers may vary. It’s also assuming best-case scenario of you not getting dredge on the reset.
If you think you’re pro and can do all non-dredge fractals in 20 min but dredge takes 60:
no reset at dredge) 20 min + 20 min + 60 min = 100 min
reset at dredge) 20 min + 20 min + (20 min + 20 min + 20 min) = 100 min
Those numbers seem right with an “optimal group” that knows what they’re doing.
If you don’t have an optimal group or run with pugs as I often do, dredge is a nightmare and not worth the hassle of running.