JUST FOR GAMING - no music or movies My display is fed via my 2 x gtx 1080ti in SLI (34" ASUS) My audio can either run via ASUS Rampage V extreme onboard optical OR Soundblaster Z OR Soundblaster ZX To a Yamaha 5.1 receiver (optical and HDMI) I know HDMI will give me better sound quality (no compression) BUT How in the world do I set it up? My assumption is use the 1080 HDMI port for sound to the receiver and Dp to the display. I run the cards in SLI. Should I sell off the soundblasters if I only use optical to go to the amplifier? So confused.