Heya! Been dealing with this for quite a while, whenever I use the dashboard and open a couple of services - rutorrent, plexpy or sickrage, eventually they would slow down to a crawl.
This is because of your browsers limitation on active http connections per server (and the dashboard swallowing a lot of these connections).
Fix for firefox:
- Browse to about:config
- Search for network.http.max-persistent-connections-per-server
- Double click and set it to a higher value. I have mine set at 24, but a lower value would probably work perfectly fine too.
As far as I can tell Chrome is locked at 6 connections.