babybio No such problem, but I'm on Fedora though, so it's hard to compare. My experience has been pretty good so far, with very minor annoyances (Firefox sometimes breaks sound output through DisplayPort, can't think of anything else). I can wake up from sleep as usual, and it worked since the very first 5.3 kernel.
By the way, JoshStrobl posted on reddit a few days ago to say that the team is waiting for Mesa 19.3 before making a new ISO. Not sure if anything else will get in the way of the ISO in the meantime, but at least support for Navi should be getting pretty good by then.
