Problem with playback (dahua nvr)

Hello, I've installed a dahua nvr4208-4k-s2 and 7 minidome hdw4431m. I have set motion detection recording but i have a problem with playback. Playback videos become jerky after few seconds, it plays normally for 2 seconds than it goes back for half second and so on. This cause a very annoying effect. The strange thing is that playback is normal in web interface.
Any suggestion?

Inviato dal mio Redmi Note 3 utilizzando Tapatalk

This is the Classifieds, ya need to post that in the NVR forums for any help.

PapaBill said:

This is the Classifieds, ya need to post that in the NVR forums for any help.

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Thank you

Inviato dal mio Redmi Note 3 utilizzando Tapatalk