[IT007]

The Kodi keep alive setting never did anything for me, only that registry fix.  I always use external LAV filters myself, be sure to keep those up to date. Could it be an Atmos thing? One thing you could try is decode everything in LAV audio and send LPCM to test. If it works, you could only use bitstreaming with dolby. 

I'm running out of ideas but this add-on https://kodi.wiki/view/Add-on:Unpause_Jumpback could make it a little less annoying. If the delay is constant use that and set it to rewind like 5 seconds.