Beta 2 has been worse.
Animations are less fluid. More crashes. Voice navigation is slow.
Only thing improved is battery life.
What device are you running it on? iPhone 5?
My iPad 3 is actually running surprising smooth
Edit.. I also started from a clean install no transferring of old data
. . . Now go to home screen and try pulling down notification centre or control centre. They wont come up until you sleep your iphone and unlock it again . . .
I would imagine most of us have experienced this bug, one way to resolve it is to swipe from left to right as if you are accessing the old Spotlight search from the home screen and then subsequently access notification or control centre.
It should work.
Mine is running like a total piece of junk (iPad 3 + Verizon). If I try to change the background image it locks the whole iPad and I have to wait a few minutes before I can even shut it off. Control center doesn't work, the camera makes the whole thing wig out, it's really just been a disaster. There's also a highly noticeable delay with all touch inputs that's particularly difficult when typing. I need to wipe it off and try installing it again. It's a beta so I'm not complaining just yet but it feels like it has a much longer way to go before it's ready for prime time than I'm used to from Apple betas of late.
Oddly enough my 4S test iPhone runs it pretty damn smoothly.
Here is my iPad IOS 7 Screen the cuben wallpapers look nice with the transparent layers.