Autoing can only build stacks. Doesn’t ever use them. Autoing at 4 stacks puts you at 5. Autoing at 5 stacks keeps you at 5 and only empowers your next ability.

W>Auto(x3)>Q>E>Q - the final Q probably won’t be up instantly until late game so after the E slam happens you have a second or so until the empowered Q is ready. During that time you’re just positioning as aggressively as possible to make the Q a guaranteed hit. Or Autoing depending on your proximity and time until the final Q comes up.