I just did this with three AVR's in a rack. We did 3G Hifi Tx and the 3g Rx going into each receiver. All of the equipment sources and AVR's were in the rack. I was able to use a 30' Etehereal HDMI from the AVR to one TV, the other TV I used a 50' Etehereal HDMI, then the other TV required a 100' run. For this we used the 3gtx and 3grx as a point to point. Everything works great. I figured if I need 4k, then I would just put the accelerators on the two HDMI cables, but the Amazon 4k on the roku worked fine.