Since one of the last Kodi 18.x updates, Kodi seems to be way more picky regarding the video cache settings. I noticed this on a 4gb ram android device. Playback didn’t start at all as I set the memorysize value too high.
So I recommended the Vero 4k+ to a friend and he recently complained that he can’t start anything anymore (source is a remote Emby server). I checked his log and realized that OSMC ships an advancedsettings including a memorysize of 524880000 bytes / 500 Megabyte, meaning it actually uses 1,5gb ram for video caching only. This device comes with only 2gb ram so I’m really wondering why you put in such a high value? I adviced him to add an own advancedsettings into his userdata folder with a lower memorysize value and now everything is fine again.
So could you please adjust this value in the default shipped advancedsettings.xml?