Turning on loglevels to identify buffering issues

I have been noticing some tunein channels buffer a lot when playing them via mopidy running as a service where as they are not facing the same issue when running it via CLI. Playing the stream via CLI runs for a longer time without as many sync/buffer issues as compared to when its running as a service where it was buffering every 30 seconds (or sometimes just gets stuck in a buffering state).

I am trying to debug this but I am not able to figure out how loglevels work when running as a service - for tunein for example, do I just add
tunein = debug

into the config or is there something else? I have tried looking through the documentation but could not find a good example of this.