A few months ago my home page started loading much slower.
Is there anything I can do with Asteroid to get fast loading back?
Do you think that there was a particular change that might have caused this? If your site just suddenly started slowing down without any action on your part then it might have more to do with the web host that serves your website’s files.
Though as I test your site (blowingrock, right?), It seems to load just fine, around 1.5 to 2.5 seconds which is quite fast considering that your homepage has a lot of pictures. If you would like to improve it a bit more then I guess you could just lessen the number of posts shown on the front page.
Dashboard -> Settings -> Reading -> Blog pages show at most