While we are doing experiments, we can watch that large model can run slower over time, that they are eventually stopping or they are crashing. We can switch on a monitor to see FPS for a 3D Window. I suggest that we can switch on a log event to monitor RAM and FlexSim Process CPU usage performance to identify problems in experiments and while the Optimizer runs. It may possible to take countermeasures to stop a model run or to collect data to find a different solution for the current problem. Thank you for considering my suggestion. Joerg