Disk access feels slower now, is there a fix?

I used open core on a 2010 iMac and upgraded it to the latest OS and updated the software. Now my disk access feels slower. I haven’t benchmarked anything and I’m not an expert on these things, I’m just saying anything that involves disk access seems to take far too long now. Is there a fix for this?

submitted by /u/Particular-Bug2189
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