Some movies are unwatchable, they crash and reboot device

The Testfile failed when played on a network share also (Samba), so no news on that front. But all the rest of the movie library runs well from a network share and without the same issues as they would have from the main source (that I use since years), a USB3-attached HDD or the SD running CoreElec. All the SD’s are fine, btw. none is broken.

PS: I use the same HDD now mounted to a RasPi3B+ running DietPi and Samba as the NAS, that provides the movie library for the N2 with CoreElec 9.2.5. Any of my several attempts to get an NFS share from my Linux-Desktop-PC going failed before I settled for the RasPi-Solution.