Audacious

For some reasons if you previously loaded some radio-stream, then restarted player and trying to load some local track (e.g. mp3), playback won't start immediately. Instead there will be "buffering" and only after that playback starts. Next local track will play normally. With next restarts problem will be still there (and it doesn't matter if you previously listened to mp3 or radio). Actually "paused" tracks from previous session will continue fine but if you try to load different track - "buffering". It will continue until you disable Neon plugin or remove all "stream items" from playlist from where one of them was originally loaded.
Current workaround is an option "Don't load metadata for songs until played". Still on terminal I see that "Neon plugin" scans "https" (I have some that currently doesn't work). And also if you decide to exit right after starting player, process won't unload until scan is finished.