First things first: Grab your Fire TV remote and head to the home screen. Look for the gear-shaped Settings cog on your screen and select it.

Once you're in Settings, scroll until you find the Applications submenu and select it.

Under Applications, you'll see several options. Choose Manage Installed Applications. This displays every app currently installed on your Fire TV. Scroll through until you find the ones that are the laggiest or crash most often. It's typically the apps you love and use that have accumulated a lot of temporary files or cache.

Also: How to clear your TV cache (and why you shouldn't wait to do it)

You don't need to clear them all -- start with your biggest offenders: Netflix, Prime Video, YouTube, etc.

Highlight the app you want to speed up and press Select on your remote. On the next screen, you'll see options like Launch Application, Force Stop, Clear Cache, and Clear Data. Clearing the cache deletes temporary files that apps use to load faster, but when those files pile up, they can actually slow things down. Each app will tell you the amount of cache it has stored on your Fire TV once you highlight it.

Once you're in the app's menu, select Clear Cache and confirm. This process usually takes just a second or two, and most of the time clearing the cache alone is enough to restore performance. It won't log you out or delete the app -- so no worries there. If you want to go the extra mile, you can also select Clear Data, but keep in mind that clearing data resets the app to its factory state, so you'll need to sign in again and reset any preferences.

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When you're finished, press the Home button to return to streaming.