Now we know that the size of the viewport influences the quality of the render output of iclone 7, I come with this tip for everyone to have the best quality possible for their renders
without the cost of increasing the render time (I hope reallusion does not spoil it when Correct the bug or correct it and allow it to have that quality and render output without the need to put a high supersampling.

Go to the nvidia control panel and select the option DSR FACTORS and choose 4

Then go in resolution (in the panel of nvidia not windows) and choose Dynamic super resolution and put 4k

Now you can put a 4k display on your 1080p monitor. and your render time without supersampling still amazing fast , Reallusion rethink your supersampling algoritm its totally wrong
now i get amazing quality at super speed fast renders  :)