I had some Hikvision cameras with a Hikvision DVR (not NVR), I decided to add some EZVIZ C8C (CS-C8C-A0-1F2WFL1), was able to add them to connect them to the DVR (DS-7208HQHI-K1) but always looked very pixelated. Today I realized that via the EZVIZ app they looked OK, then I look up to the...