Since updating to Android 11 yesterday, Spotify audio playback stutters horribly when the device display is locked. Restarts/reinstalls do not fix the issue.
We appreciate your reporting this and providing us with the relevant info.
Based on the reports we have received and the investigation conducted, it seems like this is affecting many other apps besides Spotify.
From the information we were able to gather, since many other apps are not behaving as expected, this is most likely an issue outside of our control. We suggest to install new Android updates as soon as they become available for the newest fixes to your OS.
Please note, that this issue is specifically for Android 11 and has been investigated by our teams as such. For anyone experiencing similar symptoms on other OS versions, it's best to post in a separate thread so we can look into what's happening separately. We'd also recommend checking this support site article in case that's what you're experiencing.
For more info about what the different Ongoing Issues statuses mean, check this Spotify Answer.