site response extremely slow

Hello,

It’s my third problem now, the problem is:

1. you helped me to install the demo content 2 days before, but you didnt tell me you’d finished install, I discovered it only
2. the revslider on the front page not work.
3. The most important problem, after the demo content installed, the site was extremely slow in response, something it failed to connect, most of the time is far from acceptably for the loading time. Can you imagine I need to take over 30-90 seconds to delete an item in a cart??????????????????? There’s not problem on my currently root site, so it should not be the problem of internet connectivity. It cannot be used as a shop for this slow speed.

There’re 3 problem waiting for you to help already.

1. The feature image in blog list cannot be portrait, only landscape or it would be cropped to a very strange one.
2. a post cannot be shown suddenly, only show a title and stops, perm link is correctly but it’s just doesnt show up .
3. The site is now in very very slow in response……

I’m crying for those problems….