It seems the browsers are taking too long to load a page. As you mentioned you use "Google Chrome" with other browsers, I am suggesting here some fixes that work for "Google Chrome" web browser. If this works, corresponding changes to other browsers will be made.
If Google Chrome seems to take a long time to load a website or search, it may be configured to access pages through a web proxy. Check whether the "Resolving proxy" message appears in the lower-left corner of the browser window.
Follow these steps to change your proxy setting (for Windows):
1. Press the keys `Alt + E, S' to open Settings for Google Chrome.
2. Click "Show advanced settings...".
3. Click "Change Proxy Settings".
4. Click "LAN Settings".
5. Deselect the "Automatically detect settings" checkbox.
Do reply with results.