[theduder]

My Nexus 6 had become really buggy and lagged during even simple tasks. It would take 5 seconds for texts I sent to show up in the conversation. Hangouts began restarting about a week ago, and camera couldn't be relied upon. Sometimes it would write to storage and other times it wouldn't.

I reflashed with 29X (April 2 update image). Finished restoring everything and so far it's night and day. Back to the expected high performance.

Let's hope it lasts...

[Ed Briggs]

It happens to all phones over time. Not much you can do about it except reflash or factory reset. But most people just get a new phone when things slow down.

[theduder]

Well, I had just flashed it in October when Marshmallow was released. So between then and now it got that bad... Two sideloadloaded updates and two OTAs in between.