I can confirm that in my case reverting to stock launcher from Google Now launcher made a drastic improvement!
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Factory images are now up! https://developers.google.com/android/nexus/images
Synthetic Nightmare's aospx MR1 hit my phone right now. Downloading it. Did you get your OTA update?
Installed. It supports ART unlike 2012 N7.
Congrats! Still rocking your ROM. In fact I stopped trying others :)
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