Initiative

Rolling Initiative is so last season, so this article talks about how initiative works here.
Initiative determines the order of turns during combat. When combat starts, every participant has a set speed determining turn order. It is comprised of your initiative score (dexterity modifier + 10 unless stated otherwise) and your speed score divided by 5.
(Dex Mod + 10 + (Speed in feet / 5))

To put it in simple, short, three word thing. We aren't rolling.

— Dungeon  Mistress