Seems like my Samsung TV app is being hit by stuff too, I had 5 unskippable ads and can't seem to get stable 1080p at 60fps any more despite gigabit fibre and cat6. Meanwhile getting 4k on my YouTube app on Android on WiFi.
Go figure.
YouTube is so desperate to fight this war that they're harming legitimate watchers meanwhile my rockpi running Android TV seems to keep running sTube just fine.