I've had this Nexus 6 since last March when I switched from Verizon to T-Mo. The phone is running 6.0.1 on MMB29K. It's not rooted. I have an average number of apps installed, mostly normal apps. I haven't found any apps to be hijacking my phone's resources, but that could still be a possibility. I've noticed the phone starts to stutter and lag really bad when I'm using a camera app. The screen really lags while taking photos and videos. This happens on a number of camera apps like the google camera app, manual camera, camera fv-5, open camera, instagram, etc. Not sure what it could be, any suggestions?