Blu-ray movie stutters or fully stops when doing chapter skip

I have several Blu-ray movies on a server running a Raid 5 setup. The server is connected to a 1Gb switch (network port on server is also 1Gb).
The client is connected with a 1Gb port to the switch.

The blu-ray movies a one on one original copies in folder structures. The playback of the movies on the client are working fine, but when i do a chapter skip the movie stutters for 10~30+ seconders and sometimes is not recovering.
When I pause the movie and then do a chapter skip followed by a play command it works almost every time like it supposed to (pause–> next –> play).

I changed the buffer settings in the advanced settings.xml but this did not help. I see that the buffering is added but it has no influence to the above described problems.

Code:
<advancedsettings>
<network>
<buffermode> 1 </buffermode>
<readbufferfactor> 4.0 </readbufferfactor>
<cachemembuffersize> 154857600 </cachemembuffersize>
</network>
</advancedsettings>

I will do a test with an external hard drive to check if it could be network related and will let you know the results.
– Tested it with an external USB 3 drive and got exactly the same results.

The log can be found here:
http://www.filehosting.org/file/details/…1_KODI.log

Running Kodi 15.2
Open elec 6.0.3

If there is anything I could do to help, please let me know.