Screening CREST ensembles using B97-3c reduces the size of the ensembles by filtering out conformers that are much higher in energy, and by refining the geometries such that many conformers become indistinguishable from each other. In addition, the conformer geometries produced by B97-3c which are not eliminated from consideration are much closer to those given by ωB97X-D4/def2-SVP than those given by the GFN2-xTB method, upon which CREST depends. This multi-step approach saves a great deal of optimization time per conformer, as the computationally expensive ωB97X-D4/def2-SVP method takes many fewer steps to optimize than if the optimization was started directly from the CREST-generated conformer. All these effects combine to mean that screening of CREST ensembles using B97-3c before DFT refinement saves a great deal of computational resources, and thus will allow for the generation of large, high quality ensembles of larger complexes than would otherwise be feasible, similar to what others have found. We note that we have not applied the counterpoise correction at any point in this work.