I had a couple of disconnects, but most of them happened because my wi-fi has a tendency to turn off for few seconds and then go as usual. And those that aren't related to issues on my side don't seem to happen often. Not any more frequent than they did before the maintenance, at least.
I don't know what's considered "a lot of" instanced stuff, but I'm leveling Sage along with my main job, so I'm doing Roulettes, at least.