@Derek Hines-Mohrman This issue documents a workaround: https://github.com/The-OpenROAD-Project/OpenLane/issues/518

You mean the workaround to ``define FUNCTIONAL` ? Yes, I tried that, it works to load the functional versions of each standard cell. In that case, the simulation works as expected. But I am looking for the kind of behavioral simulation where each cell has a realistic delay. It could be, the PDK does not support this...