Hello MadScoorp,
I apologize for the confusion. I was marking this as answered for tracking purposes so that I could further investigate this issue.
After a fair amount of research and pulling in more resources from our team I have found that this is indeed an issue from 4.8 to 4.9. It has to do with the dithered quantization to remove banding when we switched the temporal history buffer to 11:11:10 from FP16. It wasn’t intended to be noticeable. It’s on the to do list of fixes.
The above is a link to other issues and is a response by another staff member for what I believe to be the same issue.
Unfortunately I do not have a timeline for when this will be fixed. I will keep you up to date as this problem is handled.
Thank you,