Does anyone happen to know if it's possible for an AV receiver that's passing a signal from a Blu-ray player over HDMI to a 4K TV to degrade the picture (as opposed to connecting the Blu-ray player directly to the TV via HDMI)? I'd like to know if that could be a potential problem before purchasing a longer HDMI cable to go straight from the player to the TV as a solution. My particular setup is an Oppo BDP-93 connected to an Anthem MRX-710 receiver (which claims 4K pass-through) connected to an LG OLED E6. The picture seems overly grainy and noisy with this setup. Of course, I've already tried turning off all enhancements on the LG (e.g. Dynamic Contrast, Edge Enhancer, TruMotion, etc.) and use ISF Dark mode and turned sharpness down to 0. Any insight is appreciated.