I have no experience with that specific card but all PCIe capture cards should have virtually no delay so you should be good to go.

I'm interested in doing a little recording and a bit of streaming from my consoles, but I don't have or really want to get a TV going in the computer room. While I know the USB 3 capture devices like Elgato HD60 are unplayably delayed, I'm curious if internal PCIex cards like the Live Gamer HD would allow for live play on the PC monitor, with sound routed through the PC. I can't seem to get a straight answer on this, no matter how much Google I search.

Is using a Live Gamer HD 2 effectively as a passthrough something that can be done?

Using Live Gamer HD 2 to play PS4 on PC