Comparisons between softening values given different cluster particle numbers. Panels (a)–(d) correspond to the different softening prescriptions. The various line styles correspond to different particle numbers ﹩1024\leqslant {N}_{c}\leqslant 16384﹩. In general, ﹩{\delta }_{{\rm{opt}}}﹩ values and uncertainties are consistent as long as N_c ≥ 2048.