I'm both posting an issue I'm having and the solution to it, which only ROKU can provide with a system upgrade. I've already contacted them about it but they've done nothing so far. And it's so easy.
After using the Roku for a number of weeks you discover the audio is either out of sync, crackling, or both. Do not bother seeking the source of the problem because I already know what it is. The solution is simple -- unplug the Roku, wait 3 seconds, plug it back in -- fixed.
WHY THAT WORKS
I own the Ultra, which is top of the line-ish. I have 1GB of RAM. If you've ever had a cellphone with 1GB of RAM it will run like garbage in no time at all. The only fix? Reboot. The reboot frees up all the RAM and starts everything all over again.
SUPER EASY FIX
Roku needs to add a setting. Possibly automatic. What does it do? It makes sure that around 4AM you're not using the unit and it reboots it for you. Each day? It's all set.
Please Roku. Add this feature. I have to get up and unplug and replug my unit about every two weeks. Very annoying.
By the way -- other issues people are experiencing might go away with this same fix. Right? Because whenever you talk to a tech about your PC or phone -- what's the first thing they tell you to try?