Decoding 422 video is dependent on the codecs you have installed on your computer not the card itself.
I use a HDstar usb tuner that has the same Montage demodulator and tuner as the dvb-s2 tevii cards and I like it. I slave it off my openbox s9 primarily to watch 422 video and also to get detailed feed information.
Does the S464 work good with the asc1 or should I loop through my hdvr1200 the card is going in a 10 year old computer unless I go with the s662 USB for my laptop