I hear ya.

Although, if I'm not using it while the monster is at 60+ percent of their health, then I lose a HUGE bonus to damage. I'm probably going to do more damage just pumping the arcane insta-shot button because I get normal ranged attacks in while it is also pew pew pew with the arcane madness. Never really took an exact count, but I'd guess that I can get off around 8-10 shots with arcane extra attacks versus one aimed shot (which halts normal ranged attacks). The aimed shot without bonus is going to do somewhere between 500-800 in damage, whereas I'm looking at 1000+ with the arcane shots + regular damage over that same 5-6 seconds of pew pew.