Weighing in at a tad over 75kg, I run the Macina Lycan and Ultra 1964 at 25psi back and front.
Tyres are Hutchinson DZO, running a tubeless set up. The side walls are reasonably firm on the Hutchinson tyres as well.
It tracks over wet roots and rock as though on rails, but I pay for it when on the road.
Typical example of the type of roots that I ride across.