Mine is as fast as before. What I see now is that the battery lasts longer! How is this even possible?
It's been on my wrist for 16 hours and it shows 82% battery! O_O
Same notification settings and so as before.
That's good news... from most of the other posts, it seems the battery life is taking a big hit.
I have the S1 watch and my battery life is pretty good (heavy usage and I will still have between 30% - 40% after a very long day) but I typically only use my watch for notifications, some texting, and workout data.
I have yet to upgrade to OS4 and plan on waiting another day or two to see the real world reviews.