Telemetry data gathered based on content item output/playback may be used to determine/generate adjustment data that may improve the output/playback experience for future content item output/playback. The adjustment data may cause output/playback adjustments at/by an output device (e.g., a content output device, a content/media player, a client device, a mobile device, a smart device, etc.) to mitigate and/or resolve any output/playback issues caused by one or more errors associated with the content item.