Nexus 7 on Cm 11 topic

Hello guys, I currently own a nexus 2nd Gen it's rooted and running the latest cm 11 nightly build. Sometimes it make a buzzing noise while I'm listening to music or watching videos or it froze and restart itself that happen at least 3-4 times a day. I was wondering if that happens anyone else and how to fix it

Sent from my Nexus 7 using xda app-developers app

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