@thune … just one small remark. I’m using a theme and with this theme I have overall 19 generated images… all in size and quality much worse than what I can do with Photoshop…
so long story short… as former software developer, I just created a smooth Powershell script (haha windows), which runs Photoshop and generates all the images needed with the appropriate sizes and naming… in size more than 50% less than WordPress does… then just uploading.
I know, bad workaround, but so it be.