If you are experiencing LAG and using Textra, DELETE IT!
so, i was fed up with my horrible Priv performance.. the phone lags regularly.. takes seconds to take a picture sometimes, takes seconds to minimize apps, i tried every possible app manager to see what the problem was, and couldn't locate the culprit. i them stumbled upon an older thread talking about initial priv owners problems and how to improve battery life, and it was stated to use hangouts as the default sms app.. i tried it.. deleted everything 'textra' and using google hangouts exclusively. I will tell you 100% that the phone doesnt get nearly as hot.. lag is pretty much gone now.. it may be a bit early to tell for sure, but i'm on day 2, and i'm 99.9% certain textra is the culprit. if you're having similar issues, try it..