Nordic ski performance questions

The question : How does skier weight affect performance in variable snow structures?It seems I ski more efficiently on older ,transformed snow than on newer fluffier material,keeping up easily ,while lagging behind in newer lighter material. 
I am on the longest skis I can buy,ski waxable,no wax mechanical base and the newer skin tech skis all would be rated as near the top of the scale in stiffness. All seem to have the similar characteristic of less grip on new snow. I’ve skied the skin ski on what was basically ice,getting good kick.

Any suggestions.......or am I doomed to be a slug on the prettiest days.

 Hank