Minnesota meta-GGAs are especially problematic in terms of how results for noncovalent interactions depend on the quadrature grid and sometimes behave erratically in the CBS limit. We use the SG-3 quadrature grid for Minnesota functionals and the SG-2 grid for other meta-GGAs. (Consistent with previous testing, we find that the SG-2 grid is sufficient for the SCAN functional despite its well-documented grid sensitivity. ) We will also use the PBE, PBE0, 190 B3LYP, and SCAN 191 functionals as starting points for adding dispersion corrections that are discussed in more detail in Section 2.1.2. With the exception of SCAN, these functionals perform quite poorly for noncovalent interactions, to the point of affording strictly repulsive potentials for systems where dispersion is qualitatively important (Fig. ). However, they can still serve to set a baseline for the effectiveness of dispersion corrections. Many other functionals could be found whose errors would be much larger when applied to noncovalent data sets but it is not our intention to provide a broad survey of poor choices.