Best settings for pairing with an LG WebOS (LED) TV?

I’d appreciate if someone could point me to a guide. It feels like I can either ask an LLM or just try random settings, and I don’t know what I’m doing.

My goal is for the Apple TV to do the work, and for the LG tv to do as little as possible. I’ve turned on content matching (both options) on the Apple TV. On the LG, I’ve set it to Filmmaker Mode with Real Cinema on, and turned off TruMotion. I really don’t know if this is achieving the desired effect for video quality—the motion feels a but unnatural to me, but at this point I don’t trust myself to judge. As for the audio, it’s out of sync, which is annoying because I had the same problem with just the LG TV on its own. I can adjust the audio delay, but I’d prefer to better understand whether the video is being delayed by the Apple or the LG device.

Any pointers would be appreciated. Thanks.