Frame Rate Issue

Hello,

i am using Kodi both on a PC and on the HiMedia Q10 PRO 4K box. I enabled the option to change the frame rate of the screen to the rate of the movie (in my example a movie with 24p). I checked on the beamer and on my desktop monitor and in both cases i got 60 frames.

I enable passby for the HDMI port on my receiver and also vsync on my pc. Can someone help me where to verify the settings that enable the 24p output?