In Conditional Simulation the number of simulations used to produce estimates of Z can strongly affect the outcome of the interpolation. Below are maps of an 80 x 80 m grid interpolated at a density of 0.5 m, with different numbers of simulations. Below left is a map of block kriged data; on the right is the same data interpolated by conditional simulation (n = 1 simulation).
Additional simulations improve clarity; the map below left represents n = 10 simulations, below right n = 100 simulations:
And still more simulations resolve further detail. The map below left represents n = 1,000 simulations; below right n = 10,000 simulations:
You may wish to set the number of simulations high enough that additional simulations reveal little further resolution.