Is there something i have to fix after this transfer?
No, normally not.
My Problem is that the Allslider is loading very very slow now. I had to upload the images again to get the correct image path. But it makes around 1 min to get the images.
any idea what the Problem is?
Hm, hard to say, maybe the images size is too big. Do you use the same images like on your test server? Was your test server on your localhost? (Because images on the localhost load always very fast…)?