Hoping once again you can all come to the rescue and help me as always!
I’ve seen this problem before and somehow fixed it but it seems that was a fluke. The below image is a crop of a curtain close up in a living room scene I’m doing. As you can see, some of the right hand side renders blocky as if smooth shading isn’t on.
I previously had this happen on a subsurf model and changed it to multires and it went away. But this is not subsurfed anyway so I think that was just lucky.
I remembered something to do with the normal map causing it before so I disconnected the node for it and it goes away, but then obviously I have no normal.
Anyone got a clue why this happens?