  Renormalization of composite fields is employed to suppress the statistical
noise in lattice gauge calculations. We propose a new action which differs from
the standard Wilson action by ''irrelevant'' operators, but suppresses the
fluctuations of the plaquette. We numerically study the Creutz ratios and find
a scaling window. The SU(2) mass gap is estimated. We prove that the
contributions of the ''irrelevant'' operators to the screening mass decrease
towards the continuum limit. The results obtained from the action with noise
suppression are compared with those of the standard Wilson action.
