Originally Posted by
Blade800 Yes I am also waiting for the new firmware update to see if it improves. If not I will submit it to feedback hub.
Well, as I already have the new firmware, I can assure you that it won't improve the performance of an action center..
I'm afraid that as chancooluk said, Adreno 304 is here to blame. Start screen has a lot of animations going on, which gpu cannot handle smoothly. Maybe one can try what will happen, when you reduce the number of tiles on start screen. At least in theory, it should improve the performance..