Thanks Dana,

After some studying I will abandon all of them.

Some day's ago i got this reject. https://www.jetphotos.com/viewqueued_b.php?id=11258117 .
I see soft parts in it, but i don't understand JPG compression artefacts in it as my workflow should abandon any compression related issues.
There were some thin clouds this evening, but I have saved in in highest quality and edited per my normal workflow.
So any further explanation would be appreciated.

Thanks in advance...