Just recently MB3 has had almost 99% CPU utilization. I have to end the process and restart the server. This has been going on for the last week or so. I'm not sure if it has to do with MB+ that I recently installed, but I uninstalled it and I'm still having the issues. I have a large media library, so I'm not sure if that is causing the problem or not as well.
I'm on 220.127.116.11.1. I was getting DLNA errors and subtitle download errors, so I turned off both of those features as well, but I'm still having problems with the server being unresponsive because it is processing something in the background.
A reboot solves the problem, but not for very long. This last one it was only about 3 hours before the CPU utilization crept back to 99%.