the site is slowe
Horribly slow. And its down to the chart.
Ukyo, you should send (far) less datapoints for the chart or check what else it is you are doing wrong with high highcharts. Initial loading of the chart take an eternity.
At the very least give people the option to hide the chart or load it in its own frame/div whatever so it doesnt bog down everything.
iFrame is not a bad idea. Thought I will have to do some testing on how browsers render it.
I was considering defaulting it to only load a week's worth of data points.
There is an option under settings 'Hide charts'.