Warden is probably faster than hermit. Optimally you only need to do 8 tinkerers runs. I believe I did 11.

MOD NOTE: Retime showed 3:03:21.567 as the final time from first frame start to first frame Summit End Cutscene (when it should've shown, determined by calculating the 3.766 seconds it would've taken between first frame of Dragon's Death to Final Cutscene trigger)