When doing VASP calculations for large cells, we get a warning:
"You have a (more or less) 'large supercell' and for larger cells it might be more efficient to use real space projection operators. So try
LREAL= Autoin the INCAR file. Mind: For very accurate calculation you might also keep the reciprocal projection scheme. (i.e.
Why is using real space projection operators efficient for large supercells, and why are they less accurate?