Yep, cleared the cache partition twice actually. Once shortly after the update and once again later. It was really acting up bad last night; screen going black, restarting itself, apps were slow and sluggish, texts not working, generally unresponsive, etc..
But then this morning it seems completely fine. I don't know if it was still doing some background processing or if the heat was killing the performance; the phone was pretty hot after the update.
One plus out of the deal, I was getting so frustrated with my Messenger texting app last night I downloaded Textra. It was acting up a little bit too and eventually I just went to bed. But I've been using Textra all day now and I'm liking it a lot more than Messenger so far.