Good replacement for use with a computer

AAAAB! , That the tuner internally and then sometimes not agree on which antenna is to take it is already annoying.
For Info:
Diversity has 3 modes ..
1) Diversity .. here both antennas are combined used
2) Dual Tuner ... Each antenna picks up its own signal for 2programme (Dual Rec possible)
3) Single antenna ... Here is the "main antenna" used (In my case, the outside wall of the house)
Every now and then but the diversity spanks in Dual or diversity tuner and tried the signal of the "weaker" antenna
then to take as the main signal .. helps here briefly switch the antenna modes.
In the "single antenna" mode it happens ever that the alleged signal is too weak ..
Signal strength about 70%, with about 20% from 20% quality .... and underneath the picture then it gets dirty with stuttering and hangers ..
Wherein the clay usually continues as normal ..
Once switch to other modes bringts here too :)
Schwubs signal 70% and 100% quali? ... This "problem" is reproducible.

For me now and then times messages on the computer look fully ok.
To watch a whole movie ever annoying when mittendrinn then hangs the picture because the part again
reversed the antenna :)

Nevertheless 4Sterne the overall impression