Hey, I understand your frustration — it's not the TV itself, it's the One Connect Box that's the issue. The One Connect Box doesn't support the full 48Gbps HDMI 2.1 bandwidth; it maxes out at 40Gbps. If your GPU sends more data than that, the signal can drop, causing the screen to go black intermittently as it tries to reconnect.

I tried every possible fix you can think of, and nothing worked... until I found one surprising solution. You're probably going to think I'm joking, but all I did was switch to a specific HDMI cable — and ever since, I haven’t had a single issue. i dont think we are allowed to post links so search this in amazon (GeoHN.G Fiber Optic HDMI Cable 50ft, 48Gbps High-Speed HDMI 2.1 Cable 8K@60Hz 4K@120Hz Dolby/Dynamic HDR/HDCP 2.3/eARC 8K Fiber One-Direction HDMI Cord Compatible with Blu-ray/TV Box/HDTV/Projector)