Hello, I installed Debian 9 and ISPConfig-3 with nginx, PHP-7.0. I used this tutorial: https://www.howtoforge.com/tutorial/perfect-server-debian-9-nginx-bind-dovecot-ispconfig-3.1/ I have about 10 PHP wordpress sites and they works correctly but I noticed that sometimes some of them reload pages twice as fast then the other. After some time testing I found out that if I restart "service php7.0-fpm restart" and then reload pages for two randomly chosed sites, then these 2 sites from now on become twice as responsive compared to the rest of my sites... The first two then refreshing in 1 second, the rest refreshing in 2 or more seconds depending on site. There's no errors in log/error.log Had someone experienced this? Where should I start to look?