Video playing issue

Hi. Our clients report problems with video playback on LH series TV (43LH630V-ZJ, 43LH615V-ZE, 49LH615V-ZE, 55LH615V-ZE), firmware 05.60.15, WebOS 3.4.0. in our Player application which can be downloaded from LG Content Store (hosted application).
The issue described by our Clients: long content loading, after 1-2 second after video is loaded, black screen apears,

We do not repeat problems.

Any help appreciated.

Please share with us the app title and more detailed information about your issue at Thank you.

Thak you, e-mail sent.