Yeah. The optical 20 meters cable works flawlessly directly from the computer. I just bought a 5 meter optical cable lol. If this doesn't work I give up and Ill be switching the cables behind the PC forever. lol
I only bought the 20m one cause it was really cheap.... and it does work perfectly. Only not with the HDMI switch. But directly connected to the graphics card it does! 20 meters, HDMI 2.1. Amazing.20 meters feels like a lot; the longer the cable, the more likely you end up with one that has some issues at higher bandwidths. I try to limit my HDMI cables to 10ft for that reason. A 20 meter cable especially seems excessive.