installalled 2 x colorvu 4K cams DS-2CD2387G2-LU (with cat6) on Hikvision NVR DS-7716NI-I4 / 16P(B) problem is on playback with skipping frames and blurring on bottom quarter of screen, running latest camera firmware 5.7.12 and live view perfect?? new at this can anyone please help.
