I am now using blasters in lvl 4 mission and I got to say they are a “blast”, but what NPC group gives a blaster fit the most problems, I know Guristas do with all that jamming, and probably blood raiders I could see nueting you out and tracking sensor blocks, as far as that what has been troublesome for you using blasters.
I am using T-1 blasters Antimatter/Iron mostly.
Using a vindicator T-2 fit.