Recently youtube started "really" enforcing PO tokens, don't know if it's affecting this
0xFeedBeef
I try to be cautious with downloads from some providers. If I download a 4 minute video, I wait at least 4 minutes before downloading the next video.
Only time I have ever really seen a problem is if I am playing the video on one screen and downloading on another. So best course is to PAUSE playback before hitting the down arrow analyze button.