hey… its been a while since I used the export and uploaded it to my own server. But I remember, that there was a issue with some permission settings in the .htaccess file in the root folder of your webspace.
but first I would check the console of the dev-tools of the “blank” website. often you will get a hint there. then try to find out via searching on e.g. stackoverflow how to solve it.
in general I would not think, that hosting it on your own server would make it faster though…