After a detailed investigation of the behavior of a selection of solid fluoride ion conductors, we can conclude that while stacking pressure does lead to a deterioration of the ionic nature of the materials at high pressures up to 2 GPa, the change is not severe, can be compensated by small increases of the cycling temperature and thus still allows usage of the shown materials in ASS-FIBs. Especially if the chosen stacking pressure is limited to the range of nonlinear change of ionic conductivity of the prepared electrolytes, the cell might even benefit from an improved particle contact within the electrolyte, aside from the expected improvement of contact in the cathode composite itself.