Quicksilver Storm's reload is unsynced from all of the usual notifiers of a reload's completion (audio cues, key frames in the animation, etc.).
Video shows a comparison between it and a sunset 720 rpm auto rifle (Misfit)'s reloads for context.
its a couple millisecond difference MAYBE but it makes quicksilver storm's reload feel inconsistent.
I'm not entirely certain this is a bug, since quicksilver storm is a unique weapon unlike anything we've seen before. However, I am 100% certain it feels very wonky and fights against my muscle memory after years of playing this game.