To help with the disconnections you've started experiencing, there are a few things you can try on your end to help with your connection.
- Turn off the router for 10 minutes and restart the console.
- Make sure there is no maintenance on the PlayStation Network.
- Make sure the most recent system and game updates are installed.
- If using a wireless connection, switch to a wired connection to the router.
I have this same problem, but on Xbox one. It keeps saying that I'm spamming messages, I'm not in any guilds or talking to anyone.