Ok, this is acceptable explanation for 99% mixed state. But now I have 22% and it isn't moving. I have few inputs with 100.001 amounts where DS Rounds are 0. All inputs smaller than 100 DASH looks like mixed (DS rounds = 2).
I am facing the same issue constantly. First time it stucks at 99, but in future mixes it stopped on 35% and 22%. Simple waiting don't not solve the issue. If anybody found solution - please share your experience.