Every website you visit installs trackers onto your computer and slows it down subtly. These are called cookies and cached data, which work to track your activity if you regularly visit the same site.

You can clear Internet Explorer's cache, found in your Internet Options under the Tools menu, to improve browser performance.

Cache and cookies are useful for navigating applications and websites a user frequently visits on their computers, but not clearing them periodically can clog up space on the device–here’s how to free ...