This is because different pages across YouTube(YT Analytics, Creator Studio etc) are updated at different intervals. Also, YouTube verifies views are real/accurate and that might be the reason for the fluctuation you've noticed. Hope this helps.
@TeamYouTube what’s going on ? Now my watch time decreased from 163k to 81kpic.twitter.com/niZjtH3nwL
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My watch time hasn’t been restored yet
End of conversation
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