Hi Philippe/Gerald, is it possible to have 2 instances of bridge and vwd in the same PC to optimize time and CPU load. I can start 2 instance of DAZ (2 differents folders). VWD folder could be renamed as VWD and VWD2. But the path to VWD is stored somewhere and is used by the bridge script. As most of the time for my simulation, VWD process use only 40-50% of the CPU. Thanks