Plowed thru 2g 2f-dck, no toleramce... Is this normal?

Title says it all. Got some crystal 2f, you know how it usually looks like rocks with a tad of duff. Well, new to it and managed to go thru 2 grams with no disso tolerance. Am I crazy or is 2f just... Meh? DXM gets me way higher. Average dose was 100mg insulff