So I have a few VPS's to run my tools on, but I also have a badass gaming desktop that I like to let run constantly. But I have this problem (on the desktop computer): When I run proxy scraping and checking tools, such as ZennoPoster's Proxy Checker, ProxyGoblin, and the built-in proxy tool for Search Engine Ranker, after a while my internet locks up and I can't do anything with it. I can't navigate to websites, use my tools, or anything. (Google and other sites fail to load, Search Engine Ranker starts saying "unable to download" for every site it finds, etc.) I only use one tool at a time, and only run about 40 threads or so... I'm on a 15mbps internet connection, so I feel that it shouldn't be using up ALL of it. I've used TCPOptimizer and tried multiple settings, including "Optimal," and it doesn't seem to help. Does anyone else have this problem? Anyone know a solution? Thanks!