By D2H service engineer. I don't know what he did in just a minute. I tried for hours yesterday. He changed dish position by a fraction and also changed DiseqC and other settings.
There are no pixels cracking. Its just that VideoconHD quality is a higlly compressed MPEG transmission. TataSky HD is crystal clear because they have lesser HD channels and lower compressed transmission.
I don't know what all those settings like dseqc mean. I live in a village and there aren't many dishes around here.