The new server is closer to you (now it is in Montreal, before it was in France) so the response time on each request (page or image) should be shorter for North-American users.
Also, it is running on PHP 7 instead of 5, which is a little faster, though that I'm not sure that for a site with basic code like IMCDb the difference is really noticeable.


I'm not sure what you mean by "tabbing the page"