So got a 521 yesterday and immediately upgraded to 8.1 dev preview after the gdr2 and 3 installed.
All I have to say is ... WOW! Except for a few stutters here and there, it still buttery smooth and all the extra features really make it more useful and powerful.
After the initial upgrade the battery was getting chewed up like 15 - 20% per hour. I think it was because all the apps were upgrading and the system was setting up. I'm getting about a 2.5% per hour battery drain at the moment which is good. I have turned off some unnecessary background tasks including Cortana for now. For such a low end device, I was expecting more of a performance hit but so far so good. I'll see how it goes for the next week.
All I have to say is ... WOW! Except for a few stutters here and there, it still buttery smooth and all the extra features really make it more useful and powerful.
After the initial upgrade the battery was getting chewed up like 15 - 20% per hour. I think it was because all the apps were upgrading and the system was setting up. I'm getting about a 2.5% per hour battery drain at the moment which is good. I have turned off some unnecessary background tasks including Cortana for now. For such a low end device, I was expecting more of a performance hit but so far so good. I'll see how it goes for the next week.