In my case I neither see any significant load nor CPU utilisation, no hanging processes.
The phenomenon when using the liveProxyDaemon is that occasionally when you enter a page (eg services of host) the page loads forever since being reloaded once or twice.
I whish I could provide any usefull information as a clue to the cause … 
I doubt the stats dashlets are involved in that, since we normally don’t use any of the dashboards.
To me as ordinary person It feels like some sort of broken pipe in the UI 