I too have noticed slow response times on Jasmine. It seems to vary quite a bit. I also have checked the site with GTmetrix, Pingdom, etc. Plus I have looked at the Net panel in Firebug. The delay in loading (when there is one) is "Waiting for response from server" or "Time to first byte."
Sometimes the response is just fine, but other times it can take as long as 4 to 6 seconds or more for a page to load. I set up a very modest static HTML page for testing and saved the PDF from GTmetrix. It took 6.8 seconds for the page to load a total of 6.3 KB (html, css, js). That was the slowest. But three out of four times that I checked my homepage that day (Oct 28), GTmetrix reported it as slow loading.
Slow loading is not a rare occurrence. It is becoming more and more the norm it seems. I am considering switching to a premium hosting plan if necessary, but hopefully something else can be done to remedy the problem.