I wish monitors had frame buffers and that video out could optionally just send diffs. I have 2 4K monitors and I’m trying to figure out how to easily switch them between home and work computers. I keep bumping against hardware limits. I understand that being an issue for gaming, but I just want to run Emacs on a large screen. I could handle that over a DSL connection and Screen Sharing. Why do I need multiple Thunderbolt ports to display mostly static content?