The HF Filter part of your card is either badly designed or of minor
quality. Go to Porotuner's
site for a guide on how to modify your card.
Basically, it involves shorting a few (max. 6) Inductors and, optionally,
removing a few (max. 9) capacitors.
I decited to do it the easiest way and just shorted the inductors using
electrically conductive "paint", which is normally used for
repairing broken conductors on printed circuits (...or to unlock Durons,
That not only makes it easy to modify, but it's also quite easy to
reverse ... using a cloth and some thinner to wipe off the paint ...
just in case one has to return it for warranty ...
It did not help completely (but perhaps that's only because of my quite
old monitor), but now the images I get are visiby sharper !
This will void your warranty and most probably
also the FCC license. So, nothing to worry about ;-) Let's go