i have a question about the optimisation 1. for optimising the internal coordinates and lattice parameter i have used 4*4*4 kpoint grid it converged in 10 steps and i get the lattice parameters and internal parameters at equilibrium but when i incresed the kpoint mesh to 8*8*8 then the forces on atoms are large so my equilibrium parametes changes so how can i start whether i should use higher kpoint mesh from start of my calculation?
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