Most Vexing (Patreon)

Howdy Folks,
I've been having some strange difficulties posting images and, having the technical skills of a neanderthal, I can't figure out why.  I recently posted "All's Fairy in Love and War" and, for reasons I can't fathom, the images I keep posting on Patreon look low-rez and pixelated.  It's not the quality of the original file that's the problem (I don't think).   On my computer, both the jpeg and the original PSD file are maximum quality and do not have that blurred appearance.  I also load high rez versions of images so that the viewer gets the maximum quality in the artwork they can see on my profile.

I've been experiencing some internet issues recently but not over the past couple of days.  I've also been using a newer version of Adobe Photoshop.  I'm not sure what's going on.

Any assistance would be greatly appreciated.  I want my patrons to get the best content I can produce.