Josh Gilbert - https://www.joshgilbertba.com/
So selecting a small area of the image with region render gives me better results.
As shown, i have rendered the iamge using region render once at a time, reducing the size towards the centre each time.
I'm very confused because i thought region render only rendered part of the image and didn't effect the quality at all. I've seen so many videos people using this and they get the same results either full render of region render (just small selections of the image).
This is baffling but there must be a reason. I feel like this accidental find, narrows it down. It must be the image resolution by sub div ratio. HMMMMMM?