In the past year the production of a 1.42 MW proton beam at a relative loss level of 10^-4 at PSI’s high power proton facility became routine operation. In addition, the inaugurated buncher based beam injection into the 590 MeV Ring cyclotron made a remarkable step forward. In particular, an almost dispersion free setting of the beamline region around the 500 MHz rebuncher in the 72 MeV transfer line has been established and a perfect matching of the dispersion into the Ring cyclotron has been achieved. This buncher-operation optimized facility setting could be advanced up to the ordinary stable standard 2.2 mA production proton beam. With the buncher voltage turned on, at the moment the beam, extracted from the Ring cyclotron is limited to below 1 mA due to raising losses, mainly generated by space charge induced distortions of the beam bunches. For a better understanding of these effects a substantial effort in modelling of the accelerated beam is under way. In particular, the influence of the trim coil fields is partly implemented into the OPAL simulation code and the insertion of an additional bunch shape monitor in the Ring cyclotron is proposed.