How to improve D-Noise in blender? I'm new to blender. I have version 2.90. I made a trunk or treasure chest and when I preview it in render mode (Cycles Engine) it looks very blurry. Is there a way I can improve this? I search on google but cannot find anything related!!
Thank you in advance!!!
It should not be relative with denoise, without your screenshot, it's hard to tell what's going on your setting.
But a common blur in preview is because the simple viewport option is set to auto:

Set it to 1-px and see if the problem resolved.

And you might want to start denoise your view port after certain sample (20?) instead of denoising from beginning (which result in a laggy viewport been denoise every sample):