Jellyfin CPU usage "jump" every 5 minutes

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I wonder if this could have to do with trickplay and media segments. In the debug log, which holy crap that's a lotta log, at the 9:00 mark, which is 5 minutes from container start, you begin to see DB queries related to trickplay and media segments. Those continue for some time (pages and pages using pg dn) but it's hard to parse the debug log...