imac display arrangement

I'm using a Retina 5K, 27-inch 2017 iMac running Catalina 10.15.3 connected to 2 Samsung U28E590 displays. Whenever I "wake" my iMac (not sleep, just blank screen) the displays will randomly switch arrangement positions. Sometimes they will keep the designation (Display 2 or Display 3) and just swap left and right, sometimes they will swap designations as well. Sometimes they will remain in the correct arrangement (probably about 25% of the time). This is truly no more than an annoyance, but it does frustrate me. Is there any way to get these displays to keep their arrangement permanently?

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I have CAtalina, in case that matters. when i follow the instructions it tells me that the erase failed.


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