there is a xperia ray with very similar specifications of the defy, single core 512 mb of ram and same resolution of screen, working pretty decent i believe,
so i guess 5.1 on defy should work fast too, i dont know, still think the new kernel is needed to make defy work faster,
https://www.youtube.com/watch?v=JQzY6jds7e8
so i guess 5.1 on defy should work fast too, i dont know, still think the new kernel is needed to make defy work faster,
https://www.youtube.com/watch?v=JQzY6jds7e8