shot video freeze in 17 with playback over NAS

Hi All.
When using Kodi 17, I experience short video freezes every couple of seconds and catches up with the audio again in about a second.
Behavior changes when I disable the option to sync display to match video. Freezes still occur, but less often. When playing back from BR disc, all works fine.
Using 16, there are no playback problems at all.

Below a link to the debug log. I pressed pause just after another freeze.

http://pastebin.com/zaK5TKwH

21:45:34.414 T:3964 DEBUG: CVideoPlayerVideo::CalcDropRequirement – hurry: 1
21:45:50.352 T:2012 DEBUG: Previous line repeats 6 times[/i]
seems to repeat a couple of times, but this appears a reasonably general line…

Anybody an idea? Tried smb and nfs, hardly any difference.
I keep using 16 for now, but would be nice to be able to jump to 17 in the future.
Running Win10 by the way. AMD 9550 with R7 270

Thanks in advance for any clues