Review on 🔌 RUIPRO 8K HDMI Fiber Optic Cable 33ft: High-Speed 48Gbps, 8K@60Hz, 4K@120Hz, HDR/eARC, Compatible with LG Samsung TCL Sony RTX 3080 3090 Xbox Series X PS5 PS4 Roku - 10m by Gabriel Day

I use two of these in the 40ft version to do HDR at 4K at 60Hz through the ceiling from a Marantz 8805AV processor to an Epson 6050UB projector and from a Marantz to another 4K TV to reach another room. I use them without the included USB signal booster with no problems. I ran them through high traffic ceilings filled with lots of wires, pipes, ducts, lintels etc and walls up and down with insulation and holes drilled in the top panels and they held all traction for long distances without problems. . I have no way of testing if they support 8K at 120Hz, but these have been great solutions for my long runs where I've previously been unable to get a full signal to my gear to utilize the collective capabilities. I plan to buy at least two more for other rooms.