I am getting really really tired of seeing some random guy join in for the last two levels of a dungeon run and finding five four star mats, while I, after playing continuously from Moorcroft Manor to the Gremlin Camp, only found a single three star mat and nothing better than that.
Fix. This. >:(
I'll assume your post is just letting off some steam, and repost the stuff that's been suggested in every other material distribution thread.
Go solo and lock your party, or party with friends who are willing to give you mats. The material distribution is brutally random, so take it or leave it. If I am farming for materials, I always go solo or party with trusted friends. Also helps to find a good guild, and don't sweat the small stuff so much. If it's stressing you out so much, then don't play.