All PR is not the same. There are PV, PJ, and PA variants. If you want a mild flavor, you should use the PA variant.
PV: Very fast growth rate; strong blue flavor; bluish-green color. Very creamy consistency, e.g. Edelpilz, Roquefort and strong Gorgonzola-type.
PJ: Fast growth rate; typical blue flavor; middle-green color. Can be mixed with PV, no unbound moisture, long shelf life, e.g. Edelpilz or Roquefort.
PA: Very fast growth rate; mild blue flavor; dark-green color. Mild cheese, can be mixed with PV, long shelf life, e.g. danish blue and double-mould-type cheese.
NOTE - some cheese making suppliers do not properly identify these variants, so you may have to ask.