Update, really strange, did all the setting you said, but strangly Kodi play back the video perfect 50% and choppy 50% of the times I try.
For example, I start the Video, plays perfect even 2 hours straight, but if I paus the video, and hit play it gets choopy, then paus it again it plays perfect....... same if I stop the video then play again, 50% perfect and 50% choppy,,, whats going on?
It sure has something to do with Interlaced video and how Kodi handles it
No problems what so ever so far with progresive video
Did you set up Whitelist?
And is 25fps in that list?
Maybe your display wont support 25fps, my Sony LED tv dont.
Yes I did try with 25fps and 50 fps with double frames allowed, same problems, and YES I can see 25 fps in whitelist, if that means my TV support it or not I have no idea