Extremely Slow Start-Up?

2015 iMac on latest version of Sonoma and OCLP.

Boot up is fine but get to Desktop and it takes nearly an hour for wallpaper, mouse, keyboard, etc to become responsive. Essentially unusable until it becomes to stable. Multiple reboots sometimes help but not consistently. Tried the usual maintenance scripts etc.

Once the system becomes responsive everything runs very quickly with no issues.

Any ideas?

submitted by /u/emptybottle
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