Thanks Blaze. I had Snapchat installed the first day to check a story from a friend out of town but uninstalled it after that since I've also read about it causing major issues. I do have the Facebook app installed though for the first time in forever since I've been using the browser on my iPhone and Z10.
I installed the camera update, the one on my phone and the Play Store is still v2.5.052 so maybe this will help. I've been using Manual Camera and it's been perfectly smooth so it's got to be something in Google's app.
Also, it's been mostly fine this morning after I did a reboot last night. But then I went to compose an email in the Gmail app and it started scrolling up and down a tiny bit by itself and wouldn't let me hit send or any of the action buttons up top. It persisted after a reboot too so that was really strange. Probably an isolated bug since I've never seen it before on anything else.
I really want to love this phone because it's so nice and light, has a good size, and is quite grippy. I just wish AT&T supported WiFi calling on something other than the iPhone 6 and 6s. That was part of why I moved from Verizon was so I could call where there is next to no reception at my parents place on any carrier.
I'll give it till next week and see how it is.
Kind of wish I could have grabbed it from the Google store today for $80 off though!