Film freezes on new Vero

Installed my Vero, yesterday after arriving.

On wired connection, with its own power supply, no tweaking done.
Films are on nfs share in network pc.

But after several minutes, the film freezes, subtitles sill go on for a minute.
There is no repsonse from the remote. Only disconnecting from power solves problem.

I didnt have these troubles with my rasp pi with raspbmc or with osmc.

Any tips trick are welcone

If you disable subtitles does it behave the same?

Oke thnx, will try that