First off thanks in advance for help. I just built a new pc and would like to use it in my home theater. Its currently connected through my Yamaha AVR into the LG. Its fine for 1080 and HD audio but struggles with 4k. I believe the PC is a GIGABYTE H97N WIFI intel based platform. The LG uf7700 and the Yamaha RX A3040 as well as the PC are using HDMI for switching.