Creating pdf really slow

hey guys 'if the problem that creating the pdf takes round aboutr 3 till 5 minutes.

you can see here, if you click “Download PDF”:

i allreadytired to read the logs and google some pßoints of that but without success - so would be great if you can give me some hints how i could fix that bugs: see logs here:

(i’m running ip on ubuntu Ubuntu 16.04.1 LTS with apache 2.4 with php 7 (you can checkout here: []( info.php ) )