This sets parameters to request very fast optimization of the model(s). It reduces the cutoff distances for homology-derived restraints (e.g. AutoModel.max_ca_ca_distance), turns off model randomization (AutoModel.rand_method) and refinement (AutoModel.md_level), selects a very fast optimization schedule (AutoModel.library_schedule) and reduces the number of optimization steps (max_var_iterations). See section 2.2.3 for an example.