Thanks for the ifo. In my May 20th reply I posted a link to a topic the Kodi forum where somebody updated to a beta version of Kodi ‘Isengard’ (see post #20 there). First indications are that the video player improvements that kind Mr. Popcornmx made for Isengard do not solve this problem. But we’ll see when Isengard comes available for OSMC. 
Any indications on when Isengard comes to osmc?