There's... nothing to fix as it's not our bug?
Looking at your logs, as mentioned above, either MediaScanner is throwing a wrench into everything, or the Onyx power management stuff is tripping a standby during loading (the one may be compounding the other, or vice-versa). Those are two things we have no traction on, and at least one of those one is very much Onyx being Onyx

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If forcing MediaScanner to skip your library tree doesn't help as recommended by @pazos above, then, no, you're SOL.