How much RAM do you have? I can't seem to keep more than 1 or 2 subs unpaused simultaneously, so I'm stuck walking through the list 2 at a time, or manually checking on youtube for content and unpausing that channel to catch it.
Leaving 3 or more channels running on auto causes crashes within minutes of the code starting to look for content.
This server has 32GB of RAM, but I've got quite a few things running constantly, Unraid shows around 65% RAM committed on the dashboard normally, but it seems this container wants 8GB or more at times.
Also, I'm currently running jti989 / robo3t-docker to deal with the mongodb when needed, several times I've had to stop the youtubedl container and change all the subs back to paused in order to get back in to the youtubedl GUI, otherwise the container would just keep crashing. The robo3t app works well enough, but I haven't figured out how to make the connection entry persistent. No big deal, just have to put the server IP in after accepting the license each time. You mentioned running a mongodb tool, which one are you using? I suppose I could just run the tool on my desktop, but having it as a container on the same server is much more convenient.