Deinterlacing live preview

[NickG]

I don't know if anybody out there can help me but I'm having a bit of a problem with de-interlacing.
I'm watching TV on an Infocus X1 projector, using GBPVR captured from a UK Sky digibox using the composite input of a Hauppauge PVR 150 card.
I haven't tried playing back recordings yet but when I try watching live TV (in non-timeshift mode) I get a very visible comb effect on any scenes with movement.
I've tried FFDSHOW but this only works in timeshift mode, and I tend to channel surf so not really an option.
I've also tried the other options in the Config>Misc>Live Preview>Deinterlacing menu, but none seems to have any effect.
Any suggestions would be very helpful.
Thanks,
Nick

[sub]

FFDShow should work. Alternatively try the encoder pass-through option

[NickG]

Thanks for the prompt reply Sub.

I'm now using the encoder pass through which seems to have improved things - still no luck with ffdshow though.
I get sound when in live preview mode but only a black screen. As soon as I press the pause button to turn on timeshift mode the picture appears and everything works fine.

Nick