The fidelity of the DLPNO approximation thus appears to be sensitive to basis set only in the absence of counterpoise correction. Overall similarity of counterpoise-corrected RI-MP2/cc-pVDZ and RI-MP2/ cc-pVTZ results affirms the conclusion in Section III D, that smaller basis set can safely be used to evaluate DLPNO errors in larger systems. In what follows, we will use the cc-pVDZ basis set to examine DLPNO errors as a function of system size, extending those studies to larger systems than would otherwise be feasible with available computing resources.