I've spent about 7ish minutes outside the first bozja gate and got around 50 fragments of skill that gave me enough aetherweavers and martialists to do another relic to my current one, with another 7 minutes just outside the 2nd gate I could get enough awakening fragments to get enough skirmishers, ordaineds, irregulars and profanes that are equally useful
it's not even grinding, you don't even have to move much and you'll be swimming in them in legitimately no time and if you do CLL, DR or DAL you will actually pull your weight