My controller doesn’t get much use as I gig out in clubs mostly, so I’m confused to why the crossfader is leaking / malfunctioning when using Serato DJ 1.9.10
It seems to be behaving strangely.
I only use deck 1 & 2 with cut setting on the crossfader.
I am getting almost like a strange hamster setting on the right side of the fader (where it isolates deck 1) and a thru (of channels 1 & 2) on left side when it should be isolating deck 1.
Just as a test, can you try plugging in a couple of real audio devices eg: a pair of CD players etc and try the crossfader on the real devices rather than Serato.,