>>>edit: Solved below<<<
Device MDZ-16-AB, Oreo build 2396, Kodi 17.6, on 5 GHz. Speed tests show minimum 300 Mbit/s. NAS HDD.
Watching 60 min episode, which is just 400 MB. And all of a sudden, it will stop and cache / buffer, which happens like 4-5-6 times over the 60 min. Same qty of stops for a 5-10 GB movie of 120 min...
I don't really understand. Anyone?
>>> Now I believe the problem was solved thanks to firsthour here. You need to do this:
https://kodi.wiki/view/HOW-TO:Modify_the_video_cache
What nobody says is that in Kodi 17.6 the file manager shows different folders, you need to copy or move the .xml you just created in folder "Profile directory" . Of course you need to restart Kodi. And that's all. I'd reboot the miBox as well. You know you did it when you start seeing the white buffer on Kodi's player timeline. For a couple of days now watching smoothly. :)
So out of the examples listed did you go with 4 as suggested?