are all sites slow, or just some? remember that these days, most content is dynamic, so you are only caching some images and rare static pages, however for the dynamic pages, you are just making one more request to the proxy for nothing
It seems that everything is slow. I use the proxy mainly to limit staffs internet usage by blocking specific hosts (i.e facebook). Is there a more efficient/quicker way of doing this without slowing the traffic down?
You could use torch and check how much traffic you are getting, also check if you don’t have too many firewall rules or queues that might affect the performance. Try to disable all config except proxy and then see what happens. Also experiment with the proxy settings. Do you store cache on a CF drive? Did you try to exchange it for a better one maybe?