A new, very important and disappointing bug.
Very astonishing, that until now nobody recognized this!

I myself did not recognize it, because I only have 2 movies with real 1080p resolution and on my Sony TV I always have motionflow switched on.
So I always thought, that the micro stuttering came from the combination player/tv with motionflow switched on.
In the german forum somebody wrote that
generally all 1080p movies with 23.976, no matter from which medium played, have micro stuttering all about 40 seconds.
I could not believe it, but tried it, with switching off my motionflow on my Sony TV.
The guy from the german forum uses original Blu-ray m2ts files and I use with MakeMKV "converted" mkv files.
And the result is, that every 1080p movie with 23.976 really has micro stutters all about 40 seconds!
Unbelievable, and even much more unbelievable is, that tester guys like Looun did not recognize that!

Please, Futeko, forward this really massive problem as fast as you can to Himedia!
Thank you very much.
BTW Test it on your own, but switch off all your TV's picure improovers like Motionflow a.s.o.
Here the Link
http://kodi.wiki/view/SamplesUnder section 4 download an test the first
1080p @ 23.976 and you will see stuttering all 40-50 seconds
Under section 4 download and test the second
1080p @ 24 and you will see absolutely no stuttering