2 questions about the DSF

[MoonWalker]

1)How does the threshold options work??

2)I have encoded Tomb Raider Pal.I notice very very much mosqito noise even with dering.Is there any other option I have to check?

I have used both Koepi's and Nic's Latest builds.The encoding was done by a previous build(I can't recall which)

Thanks in advance for your answers,

MoonWalker