Video and audio were not buffering from different sources (spotify in the app, and youtube in Opera browser), so after trying to restore the system using timeshift, deleting cache, and even doing fsck, I managed to isolate the issue to bluetooth, specifically when connected to the iHome iBN97 speaker (other Bluetooth devices work fine).
I do not know how to monitor specifically for this, so I can’t give more info. Also, using spotify --show-console
did not show any specific info more than a Prefetch: Key prefetch error key_denied for file
.
I guess this is just a bug report, and in case somebody has the same issue the workaround is just disconnecting the device.