Did I install the wrong OS?

I installed OCLP and the latest version of Sonoma on a late-2015 27-inch 5k iMac (model 17.1). The performance has been really laggy. There is an intermittent freeze in almost everything I do. It also crashed twice already in the less than two hour of usage.

Did I read the “supported models” page wrong? My reading is that Sonoma is supported on this machine.

submitted by /u/wxiao1993
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