I recently upgraded to Corona 13 and noticed that it doesn’t clean up the image even with 4% noise. Is there a different default setting to enable? In Corona 11, rendering takes 1 hour, and in Corona 13, 16 minutes.
There may be some differences between two versions of Corona which due to which the same noise level will be interpreted differently. I am not sure what exact change it could be in this case. I’m afraid the only solutions are either adjusting the noise level (setting it lower) or using the pass or time limit instead.