Messages take forever sync to Mac, if at all
For about the past week, my messages have either been taking forever to show up on my MacBook Pro, or just do not show up at all. I will get the notification on my phone of a new message, but then have to either wait for the Mac, or just finally grab up my phone. I notice it tends to happen more and worse with non-iMessage users, but will still happen with iMessage users as well. I have tried signing out of messages completely on the Mac, but it didn't seem to help, and once I had signed back in and it was loading messages, I had received some, which didn't display.
MacBook Pro with Retina display, OS X El Capitan (10.11.3)