Yes, first unplug it and plug it back in. But after that, here's what you can try to fix your slow Fire TV Stick.
Turns out that having a folder full of cache is a bad thing.
The Amazon Fire TV Stick is certainly a handy gadget, being able to turn any old TV into a smart TV that can run YouTube, Netflix, and any other app you might want to use. For those who don't want to ...