was used for the convergence of the QSGW and QSG Ŵ self-energies, with a finer 8×8×7 mesh used for intermediate DFT calculations. The QSG Ŵ band gap was found to converge to within 0.01 eV using 12 occupied and 12 empty bands, while a finer 6×6×6 was used for the solution of the Bethe-Salpeter Equation and the resultant dielectric spectrum.