PhotoanalysisD is dragging the system down.

Imac (late 2014) Intel Quad Core i5 with 32 GB ram running 11.7.10 (Big Sur). I like this computer so much!

For years this system has crawled to a stop (beach ball). I have to walk away and come back to the machine later. This system is used for light web surfing, I run outlook for mail, and some excel spreadsheets. I have about 300 GB of old (archive) non-apple photos in ~/Archive_Photos which PD might be crawling over.

So, I noticed that photoanalysD is taking 90% CPU and wrote a script:

sudo /usr/bin/killall photoanalysisd 

/usr/bin/killall cloudphotod 

/usr/bin/killall photolibraryd 

and don't see beach balling. But I have to do this throughout the day.

I have used apple support about this before and they didn't think that photoanalysisd was the culprit.

I tried a less brutal approach found on Tech_Avail: What is Photoanalysd on Mac and how to manage

but cannot "set affinity" and cannot find the iCloud preferences "uncheck iCloud photos".

Other than running a script manually from terminal how can I get PD to use less CPU and behave itself?