They don't seem to have fixed much at all, it's still a total dog - massive memory hog, lots of random lock-ups and crashes. The classic is the pop-up telling you it's working on showing you a pop-up. And even introduced new issues (like including files from gitignore in the change-sets). I'm this close (holding fingers very close together) to just dumping the thing for a text editor. VS2015 has been a total car crash as far as I'm concerned.
