What is cache?
Cache is a software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. In short, it is a shortcut, committed to (and taking up) memory. Clearing cache occasionally will make the Fire TV Stick work more smoothly, as the build-up of too much cache will slow down the processor and can lead the video stream to buffer.
How do I clear it?
Press Home on your Fire TV Stick Remote
Scroll to the right and select Settings
Under Settings, scroll to Applications
Under Applications, scroll down to Manage installed applications
In the installed applications. the total amount of stored cache will display. select and choose Clear cache
After completing these steps, Press Home on your remote and navigate to Settings > ‘My Fire TV’
Scroll down to ‘Restart’, toggle left to ‘Restart’ (from Cancel) and select that option.
Your Amazon Fire TV Stick will display that it is powering off, and will automatically come back on to the main home screen as it restarts.
That’s it! The cache will be cleared when the stick powers back on. We recommend checking/clearing cache every month or so for optimal performance.