Yes, and it's not that it's just slow, it also freezes Emacs completely when it borks (and it does bork). I also found that none of the emacs terminals could correctly display my prompt and I ended up writing a bunch of bash conditionals to make my prompt dumber to work in Emacs. Just worked out of the box with Vim's :term.
A common thing people run into with Emacs is using the "shell" under the impression that it's a terminal emulator. You want "term" for a proper terminal emulator that can handle fancy terminal stuff. The "term" terminal emulator can even run TUI stuff like nano, and even vim itself!
