In this step one needs to set LOPTICS.TRUE. to have VASP calculate the derivative of the orbitals w.r.t. the Bloch wave vector (stored in the WAVEDER file). These are needed to correctly describe the long-wavelength limit of the dielectric screening. N.B. This calculation needs the orbitals (WAVECAR file) of Step 1.
2022. 6. 19. 183; Search Vasp Presentation. Important INCAR parameters and GaAsBi 128 atoms, VASP HSE06, NBANDS 384, 3 k-points Kebnekaise, 6 nodes on 24c, NSIM1 Publications SURVEY OF HEALTHCARE EXPERIENCES OF PATIENTS SPECIALTY CARE Endothelial cells account for about 1 kilogram of an adult human body, which is on par with the liver French".
begingroup After finishing this answer, it appears to me that I have made a roadmap of tests that you can do to actually find the requirements for a better phonon spectrum of 1D monolayer in VASP rather than answer your question specifically. It is up to the mods to see if this fits the bill of a good answer. This is an opportunity for you to add to this answer with.