I have been doing work in Photoshop, but the saved .tiffs look vastly different outside of Photoshop. I save as .Tiff because often the files are larger than 2GB so no PSD. But with later or image compression the Tiff size is not that bad. I can get it on my iPhone. But in Mac OS Preview, Mac OS Photos, iOS Photos, and every app other than Photoshop, they look different regardless of compression. it only renders properly in Photoshop when open. The files are larger, but that's not the problem. They are complex (quite a few layers differently blended in groups that are blended, see screenshot. This doesn't happen with all of them, but many. Every other app outside of Photoshop renders them with "extra detail"/noise or what I recently noticed is some type of merging. I can't do command+option+shift+e (not sure of the name of that shortcut) because it doesn't blend properly. Even with that shortcut applied to the smaller groups and those groups blended as they were it is still distorted somewhat in PS and very much in Preview on Photos on the Mac. Every other app except Photoshop. Black and white ones get a ton of extra white spots and color ones get extra color dots.
This is beyond adjusting curves/color/the light because the rendering is a bit off outside of PS. It is noise but also what appears to be some merging. Different apps different amounts. I have tried the above keyboard shortcut, a white channel, taking a screenshot and blending that on top, and File->Scripts->Flatten All Layer Effects.
I don't mind the larger files, but I can't share nor see the images outside of Photoshop because of this issue. I can't flatten or merge in any way because it is a lot worse. In other apps, it looks as if there is some flatting/merging but not entirely. Often times screenshots aren't even the same.
Thank you very much