I got that black screen a few times, i figured it was me doing something wrong but to hear you say something about means i need to keep track of the situation and details around when it happens more.

Yeah i have not died so much yet with my main arcanist yet. Are you using the assist hotkey or you using a /assist macro hotkey inside isboxer also are you using any step-delay to the target slot+assist? My only issue with it is the target flipping when i press the assist/broadcast key. It probably be a lot smoother if i made a seperate assist off my keys that way i can also kill a few things at once.