Much better. Loads into multi-player a lot faster than previously, although I still have the launcher taking forever to load and generally performing badly. Performance is generally a lot smoother than B1.0x versions for me and aesthetically and audibly much improved. Missions / bulletins generally are a lot better in terms of layout, rewards, information provision etc. Everything is just...better. Only issue I'd raise is I seem to be getting a few false alarms in SC and exiting hyperspace like shields offline when they're not, emergency stop warning without such happening. Obviously SC is still sometimes taking a while to happen on entry and exit, but FS generally seems to perform better.
Managing about 40fps typical, dropping as low as 16fps in stations (rare, mostly 25fps).