I can set my camera Samsung NX1 to 30fps but it causes flicker in electric light (PAL country). I have no problem with the 50fps setting in PD15 because I have finally after 3 years much better motion, less flicker, judder in my 25p videos. I thought somebody else would like to try it or already has done so. Maybe there is a 60fps setting for "NTSC" 50Hz countrys with 24p and 30p cameras.
Corsair Vengeance C70, Asus Geforce GTX 1060
Asus Prime Z370-A, Corsair RMx 850, Samsung SSD 960 EVO M.2. Windows 10,
Corsair Vengeance LP 2X16Gb DDR4 RAM,Intel i7-8700K