I have tried 2 different DDJ SX2 mappings for Traktor that I got Traktor Bible.
The mappings overall work very well.
However there is some random things that happen with the effects banks.

So for example on deck 1 for fx knobs 1,2,3 I will set these to Delay, Beatmasher 2 and Wormhole.

I may then play a track and use a PAD FX from the "Roll" pads as this is where the effects are mapped.

but then the effects for knobs 1,2 & 3 might change to something else.

Even in SIngle mode if I set it to Delay and then I use it , I may switch to group to use an effect.
when I switch back to single mode it has changed to Gater

Any ideas????