Hello, could you explain my the secret of choosing to time step for md integrator? I want to perform a 10-20 ns simulation in water in order to, for ex., calculate some interactions or to see if the structure would relax to a stable state. If I use vsites, heavyh and LINCS I can run with 6 fs step. This would be quite quick. I just wonder if this is `by book`. I appreciate your help. SDA
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