If it is on, then please try again with it off and let me know if you think it is causing some issues for you.
As far as I know, this would be the only changes to the dithering logic recently.
One possible solution, either way, is playing with the number of dither pixels. E.g. with one-pulse, I wouldn't be surprised if it could use more pixels than before, since it isn't insisting on achieving the full dither amount.
Also, what do you see that makes you think your current dithering isn't random?
Thanks for the info. Interesting you asked. I noticed this while I was imaging (7482) 1994 PC1. When I took the first lot I have placed the image below, interesting though it started off random, then when linear. I might have a look at other ones as well. Anyway, I can't test the setup due to extreme weather prohibiting session time. I will get onto it ASAP.
The image is a cut of a small portion of a load of hot pixels in a stacked image.
I just found out that I was running 3.56. I have upgraded to 3.57 and will test the configuration when the skies clear, possibly this coming Friday. So there was no One Pulse Dither enabled. I have a couple of initial issues with 3.57 that stopped working, hope to look at it later.