Using FastSatFinder the TBS6981 reports 75% Quality and 92% Strength on Astra 28.2e.
My previous card, BlackGold BGT3595, reported 100% Quality.
I had problems with the BlackGold card, image breakup and stuttering. That's why I replaced it with the TBS6981. I've watched a few hours of TV and unfortunately I see some image breakup on the TBS card too, but not as much.
I tweaked the dish but the quality won't go above 76%. Any reason why the reading is low on this card, as signal quality is more important than strength.