Upgrad to 5.0.2 from 4.4.4 on 2012 Nexus 7 now crashes reguarly, can i revert?

[AC Question]

When ever using chrome, fb or gmail screens freeze and sometimes i need to reboot. I removed a number of apps in case they were not compatible, no joy. Used to love my tablet. Upgrade went fine, but right away noticed lag in performance. Is there something i can do to optimize or reload the OS?

 

[Rukbat]

If the update was over the air, contact Google or your carrier. (They broke it, they own it.) If you did it yourself, maybe.