Balun vs HDMI for ~40' Run
Just moved into a new place, which has a basement setup with architectural speakers I'd like to use. The configuration has my 65" LG C9 OLED wall mounted, with the built in shelving for my AVR and all other devices on the opposite side of the room. The previous owner was using a basic high speed HDMI cable of about 50' fished through the ceiling for his AVR. I attempted to use the existing run with my AVR, Xbox One X, and Apple TV 4K, to no avail. Static and picture drop off were pretty much all I got, although DTS and Dolby via ARC to my AVR had no issues when running Netflix from the TV app.
I was able to run a 35' Cat6 cable - that ran a tad short - but am wondering if I should be using a Balun unit, or just running a newer 40' HDMI 2.1 cable that can support 18Gbps and ARC. I don't use my OLED's baked-in apps often, but I do have antenna TV and the option to use ARC would be idea, but not mandatory. I've been looking at the Altona HDR-EX-70-2PS kit, but I see Monoprice and a few other brands name checked here often. No balun manufacturer seems to have a unit under $1500 with a chipset that supports 18Gps, 4:4:4, HDR, and Dolby Vision at 60Hz. And if I want IR support or ARC, that's even more. It seems an HDMI would be fine for that, but I worry about the signal degradation, especially for UHD/HDR content, and especially lag for gaming.
Any recommendations as to what would be the ideal setup outside of me moving all my equipment in front of the television, which would waste the built in space, and be visually unappealing? I've attached a panoramic photo to illustrate the layout. TV is mounted to the left and the built ins are all the way to the right. Please don't hesitate to ask for clarifications.
Thanks in advance!!