How Do I Properly Configure Proxy Settings for My Network? or What’s the Best Way to Configure Proxy

Proxies are tricky. If your internet’s slow after configuring one, it’s probably:
1. A crappy proxy server
2. Wrong port/address
3. Your ISP throttling proxy traffic

Try disabling it completely first. If speed’s back, then yeah, proxy’s the issue.

For Linux, `gsettings set org.gnome.system.proxy mode 'none'` disables it. Mac’s similar in Network settings.