The one on the right looks worse?
That's true, but only in one specific instance - a PNG file of less than 1MB on a biz page.
https://www.damiensymonds.net/2015/07/mangled-watermarks-on-facebook.html
I spoke too soon. The update download progress bar got all the way to 100%, but then it told me it wasn't able to download, and that I should try again later.
Well ... because you don't need a copy, of course. You're just editing your photo.
PLEASE read: https://www.damiensymonds.net/examining-the-complexities-of-an-acr-workflow.html
And PLEASE do: https://www.damiensymonds.net/bridge-30-day-challenge
Nancy, I'm ashamed of you. You know better than this. You, who know better, should be browsing the internet looking for opportunities to educate people about this; not looking for seeds of doubt about an issue which you already understand.
Yeah, back when the Spyder4 was current. I fear you need a new calibrator, sorry.
However, have you tried the options under "Part 9 - Troubleshooting" about 2/3rds down this page? It's for the Spyder 5, not the 4, but is fairly relevant.