It used to be that when I used Plex, i could stream to multiple devices just fine over the internet and on the local network without any issues at all.
However lately, with just 3 streams, everyone is lagging and stuttering and having to constantly pause the video and play to hopefully let it buffer a little. Looking at the server i can see the CPU usage hovering around 80-90%, bouncing up and down a little as the plex transcoder is transcoding snippets of video. I have an 80Mbit upload limit and im only utilizing 15-20 of that at a time. Because of this, i know its the CPU utilization crapping everyone out.
What changed? Why can I no longer have more than a single stream without terrible performance? Like i said, it used to be just fine but the last few months (at least) its been terrible.
The CPU has always been an i5-3350P CPU (4 core, 3.1GHz) with 20GB of RAM installed. Any ideas whats wrong or what I can do to fix this or at least troubleshoot it?