Is anyone else having a hard time with the dews on regular Adventurers?

Finished 2nd set within 2,5 hours of 4x drop, got 2 every 30 min. o_o
3rd set is a bit harder again, found 3 lights within 2 hours.

Edit:

@ Dark Link or anyone else who did the 3rd part; What map did you guys hunt in?

I went to Panda's, wild boar area 3 or whatever the hidden street is called before Tae Roon.