I've noticed this issue a lot lately, for some reason some models simply don't have the option to switch them from dynamic to static, i've found if you add the defaultstatic line to the fpe then you get the option back, so i've started making all my new models with that line in the fpe.
I've actually found that with a couple of the drop down options, if you don't have a "default" setting listed in the fpe, the drop down menu doesn't appear on the properties panel.
Primary Desktop:
i7 7700,k NV1070 8GB, 16GB 3200mhz memory, 1x 2TB Hybrid, Win10.
Secondary Desktop:
i5 4760k, NV960 2GB, 16GB 2333mhz memory, 1x 2TB Hybrid, Win10.
Laptop:
i3, Intel 4000 series graphics, 6GB memory, 1x 500gb HDD, Win8.1.