# Frequency dependent dielectric tensor without
# local field effects
PREC=Accurate
LREAL=.FALSE.
ADDGRID=.TRUE.
ENCUT = 550.
GGA=PS
KSPACING = 0.15
## and you might try with the following
#ALGO=All
NELM = 200
NELMDL = -8
AMIN = 0.005
ISMEAR =  0
SIGMA  =  0.1
EDIFF = 1e-8
NCORE = 10
IBRION = -1
POTIM = 0.1
EDIFFG = -0.001
NSW = 1
NWRITE = 1
LWAVE=.FALSE.
LCHARG=.FALSE.
#SCAN
METAGGA = SCAN
LASPH = .TRUE.
#Dipole corrections
LDIPOL = .TRUE.
DIPOL = 0. 0. 0.3
IDIPOL = 3
#LCHARG=.TRUE.
#LMAXMIX = 4
#LORBIT = 11
