[tingtong5]

As you use DSPlayer Kodi doesn't decode the movie so you need to set LAV Filter to use HW acceleration. Open the LAV video settings and make sure HW acceleration is enabled for h264 and HEVC.

It turns out that these were already enabled in the LAV video settings.

I did some testing using "O" to let kodi display cpu load and with CTRL-J to let Madvr show dropped frames.

Now I can clearly see that CPU load is not the issue , its on average below 30% for each core during playing 4K content.( It was openhardware monitor that put me on the wrong track by looking at max values after playing some 4 K content.)

However madvr is dropping quite a lot of frames. When choosing jinc (instead of NNEDI3 or NGU) for chroma upscaling, the situation improves a lot and no more obvious stuttering, still some dropped frames every few seconds however.

I was under the assumption that GTX1070 is capable of doing better then this. Any other ideas of what I might check in order to improve performance ?

By the way , I am using Kodi 16.1 at the moment, is there any reason to upgrade to 17.1 with respect to 4K playback?