Android 4.2. on Nexus 7: Lagfest when doing certain things?

Hey guys,

first of all, let me state that I'm someone who absolutely loves android. I own a Nexus 7 and a Galaxy S2. I also have an Ipad (1st gen) and a Windows Phone 7 from work, but android is really my favorite platform at the moment, mainly because of it's flexibility and the great Google service integration.

That said, I have an issue with my Nexus 7 that's really annoying: lags and performance drops.

Don't get me wrong, for the most part the N7 is doing fine, but there are certain actions which always cause lags and stuttering for me, and I just wanted to check with you whether that's normal or not.

1st action: Switching orientation while screen is locked after waking up the device

Whenever i pick up my N7, i press the power/wake up key and then decide on whether i want to hold the Nexus in Portrait or Landscape mode. By default, the n7 is set to Portrait mode, so even if you hold it in Landscape before pressing the power key, the lock screen will be displayed in Portrait and rotated after some seconds.

However, if i proceed and unlock the lock screen the device is almost unusable for a few seconds. The frame rate is going down, the widgets are flickering and reloading themselves and the performance is anything but smooth. It's not a big problem, but it's an annoyance i encounter every day.

2nd action: After installing and uninstalling an app

This is not about performance during an installation/uninstallation process. I know that's hard work for any device and usually the performance is good enough when doing these things.

BUT what causes quite some lag is when android tries to create/remove the app shortcuts on the home screen after installing/uninstalling. This happens when returning to the homescreen and makes the device similarly unusable for a few seconds.

Other than that, the Nexus 7 is a very capable device and renders everything beautifully smooth. But i really think these 2 actions have to be smoothened, because I'm definitely not the only one who uses them on every day.

What do you guys think? have you found other actions that (almost) always lead to performance drops? can these issues be solved?