This script is highly recommended, so I'm sure it's good. But...

Can this be tweaked to do the opposite and force 160p? I am in a motel room for several days, on the throttled free wifi, and Twitch's native Auto setting will not downscale to give me a stable stream. It stays at Source, playing for 3 seconds, and then pausing for 30 seconds or more. I have been unable to locate a script for what I'm hoping for. I'm trying to watch my friends' podcast live and on VOD. Sorry if this was inappropriate; if someone would be so kind as to direct me, you'll have my gratitude and praise.

Jason T. Reimche

I'm not sure if you're still in need of this solution, but a simple change you can make to the code is to change chunked on the last line in the script to 160p

The last line would end up looking like this:
window.localStorage.setItem('video-quality', '{"default":"160p"}');

This may not work on all streams, but it should work on streams that have transcoding available along with the 160p option.

Thank you! Yeah, I think the channels I'm struggling with don't yet have the status with Twitch for transcoding, and I only found that out a few hours ago. Your response is much appreciated.