In this second part of a thorough investigation into the influence of external pressure and shear stress on melt crystallization the effect of shear stress is analysed. Both pseudoplastic and dilatant liquids are examined, and possible effects of the respective rheological behaviour are discussed. It is shown that the very nature of pseudoplastic liquids leads to a reduction of their viscosity, which results in increased nucleation and crystal growth rates, whilst the non-steady-state time lag is, on the contrary, reduced. Experimental evidence supporting the above idea is discussed.