Quick impression, the UI doesn't feel as snappy and fast as before. Takes around 2 seconds to get into class selection UI. Very odd choice for a fast paced game.
To iterate a bit on that, this animations will be played hundreds of times for an average player. Every time the player changes his mind and wants to change a class, more waiting time again.
Seems like there is no key bind to close UI windows as well, I intuitively pressed Escape but nothing happened.