For what it is worth, everyone I have spoken to including on driver training days run by LR to advance sand days run by the Range Rover Club say in all off road environs to turn the DSC off.
Has worked for me on sand and all other surfaces, but really the true expert is GGhaggis, what say he !!!
As always my opinion is offered with nothing other than limited personal experience and the anonymity of a keyboard to back it up !!!
Regards,
George

