Wisconsin used to be a nightmare with renewing drivers licenses or vehicle registration forty years ago. I can't remember waiting more than an hour or two though. Their waiting area would only seat a couple of dozen customers so most people would just leave when they saw the room was full.
Some years ago, they streamlined the service. They also opened up additional locations. Nowadays, virtually all services are available online. You need to go in for vision checks but other than that, in-person visits aren't required. They also changed the interval for the vision check to eight years.
When purchasing a vehicle from a registered dealer, the dealer takes care of the necessary paperwork and if you didn't transfer the plates from your old vehicle, new plates are mailed to you. My plates that were 24 years old had deteriorated to the point of being almost unreadable and last year, I ordered new plates online and received them in the mail a few days later.