The anticipation of receiving (or manually installing) a new Android update is mind blowing. Not only can’t you wait to see the new interface, but your also hoping the performance will dramatically improve. Unfortunately that’s not the case for a lot of Nexus 7 (2012) owners.
Many users are reporting that their tablet has become so slow and buggy with restarts that it’s “unusable.” One of the Google product experts suggested clearing the recovery cache partition, but unfortunately that hasn’t helped.
It’s also possible that users with the 8 GB model might be experience more issues than others since there is less space to work with. Are you experiencing this same problem with your Nexus 7 (2012)? If so, what is your storage capacity?
source: Google Product Forums