my server constantly write thes here in the console what is it?

(15:58:18) | Calling 'CanNetworkTo' on 'Skins v1.2.9' took average 1320ms
(15:58:19) | Calling 'CanNetworkTo' on 'Vanish v0.7.2' took average 1306ms
(15:58:28) | Calling 'CanNetworkTo' on 'Skins v1.2.9' took average 1406ms
(15:58:29) | Calling 'CanNetworkTo' on 'Vanish v0.7.2' took average 1376ms
(15:58:38) | Calling 'CanNetworkTo' on 'Skins v1.2.9' took average 1403ms
(15:58:39) | Calling 'CanNetworkTo' on 'Vanish v0.7.2' took average 1368ms

The CanNetworkTo is an expensive hook, which both plugins are using for some reason. I can see why Vanish it using it, but Skins using it makes no sense. I'd suggest posting in the support threads for the Skins plugin to see why it uses it and suggesting to avoid using it. For Vanish, there is a setting called "performance mode" that wouldn't use it, but would also not be as good.