Turns out the fix was a cheap, five-minute setup, and it had nothing to do with any of the things I'd spent months blaming.

Buffering and restarts on a 4K streaming stick usually trace back to one thing: how it's powered, not your Wi-Fi.

The Amazon Fire TV Stick 4K Select is the cheapest 4K stick Amazon makes, but is it actually worth $40 (or however much it will drop to during its maker’s frequent sales)? That’s the question I ...