The thing I find is that ever time the HTML5 window changes size is that it appears to drop all data and start loading again.
So my old tactic of open 5 tabs, maximise and watch one by one is completely nerfed
So my old tactic of open 5 tabs, maximise and watch one by one is completely nerfed
To prevent YouTube from switching sources when resizing the content, select a specific quality first (it defaults to “Auto”). I wouldn't be surprised if there were browser extensions that automatically do this (e.g. always choose the highest quality).
I switched to forcing HTML a while ago so can't test. Either way, I'll try that - thank you :)