For the sake of completeness: for dispersion-uncorrected κnoDispSDX-PBEP86 functionals, we likewise found that at elevated fractions of HF exchange, κmin approaches infinity (see Figure and Table in the Supporting Information). In this case, obviously the balance is tipped more strongly toward high percentages of PT2 correlation (and of HF exchange, as the two are well known to be linearly related) as long-range dispersion is not covered by anything else. Thus far, we have used the same percentage of HF and semilocal exchange for orbital generation and final energy calculation. What happens when we use PBE0P86 (i.e., 0.25HFx + 0.75PBEx + 1.0P86c) orbitals in the final energy evaluation of κDSD69-PBEP86-D3BJ? These new DSD functionals are found not to benefit from the PT2 regularization (see Table and Figure in the Supporting Information). With WTMAD2=2.28 kcal/mol, the unregularized version, revDSD-PBEP86-D3BJ@PBE0P86, slightly outperforms the original revDSD-PBEP86-D3BJ (WTMAD2=2.38 kcal/mol): nearly all of that gain comes from RSE43 (radical-stabilization energies), due to substantially reduced spin contamination thanks to the smaller cX,HF in the orbitals.. If we constrain c2ab=c2ss, the WTMAD2 gap between κmin and κ=∞ is 0.13 kcal/molmarginally larger than what we obtained for κDH69-PBEP86-D3BJ (0.10 kcal/mol). κmin also increases from 2.0 (for κDH69-PBEP86-D3BJ) to 3.0. For the κDOD variants of these new functionals, we saw the same trend as the κDSD forms.