Review on FeizLink 8K HDMI 2.1 Fiber Cable 50ft - 4K 120Hz, 8K 60Hz, 48Gbps, Dynamic HDR10, eARC, HDCP 2.2 - Compatible with RTX 3080, RTX 3090, Xbox Series X, PS5, LG C9, Samsung Q90T, TCL, Sony by Mike Flyers

The cable is physically well made. It seems more flexible than other fiber optic cables I've tried. It seems that there is no such hard cable storage. After unwinding it, I could put it where I wanted. My PC is fine so far. The 50 foot cable works well. I have an rtx 3090 and hooked it up to a LG CX OLED. The TV immediately popped up a "instant game response" notification. This is a great start as I've missed this with other long cables, be it 2.1 or 2.0 bandwidth. I can set my desktop and games to 4k 120hz with 10-bit color and G-sync works great. I tested g-sync with games that I knew wouldn't tether to 120Hz with this TV. Cyberpunk 2077, Hitman 3, Immortals Fenix Rising - everything remained smooth and crack-free with g-sync, as expected. I also tested the cable on my PS5. With my previous 50ft HDMI 2.0 cable with no fiber, I got screen flickering and crackling unless I lowered the bandwidth in the PS5 settings. Now, with this cable, I don't see any flickering/dropouts. For now I will keep this cable on PC and use the old cable on PS5 in low bandwidth mode until I get a 2.1 matrix splitter. I can confidently recommend this cable for use with an RTX 30 series card (if you can get hold of it!). You should be able to get whatever you want from your 120Hz TV.