Update: This issue has been fixed. Realtime data and smart insights should be back now. View counts for the affected videos have been restored. Thanks for your reports!https://twitter.com/TeamYouTube/status/1159885087636246534 …
May not be related to this recent fix, view counts can slow down or freeze as we verify they're real (from humans not computer programs). This is actually part of how our system works to ensure we are counting views accurately. More on this here: https://yt.be/help/Jgao