To me the Empire had a real employee problem which seemed to worsen once Tarkin died. Vader had to become head of Human Resources and he clearly wasn’t cut out for that job. All of his captains and admirals were screwups. Vader’s only solution was to force choke them and keep promoting from within. Even that didn’t work so he was forced to bring in the bounty hunters and he was hoping that would light a fire under some asses. It worked for a little bit all the way through the Cloud City incidents but again due to gross incompetence, the Falcon gets away. Vader quietly storms off and I’m sure he probably resigned from Human Resources position shortly after.
‘Everything I know about HR I learned from Darth Vader’:-