Going to URL unstable, especially with longer URLS

Hi there,

I'm using private elite proxies that have no issues on that end. But especially on Zennoposter but sometimes on Projectmaker, when I try to follow/go to a URL, it gives a blank page. Sometimes it works if I just try it again, sometimes it works if I go to www.google.com and then back to the page I was trying to go to. Sometimes it doesn't work at all until I restart Zennoposter manually.

(Not a memory issue, I restart the instance every loop).

Any thoughts on what might be causing this?

Yes it does seem to work better if proxies are disabled. But I'm using really high quality private proxies, and it works well in Projectmaker vs Zennoposter.

Do you think it's a proxy issue or ZP issue?