Yamaha TSR-700 (Costco version or RX-V6A) help

[Go Blue]

Just purchased the TSR700 from Costco to cut down on cables used with my previous Pio AVR that would not pass 4K through to TV. All eq (Sony 4K BDP, DirecTV, PS4, Xbox One) going into AVR and one HDMI out to TV (LG OLED) through ARC. Nothing but constant issues and need some help to figure out what I'm missing.

Tons of audio and video issues from the start. Lots of cable swapping, unplugging/replugging, and power cycling. It's better now, but still having issues at times when switching from inputs within AVR.

Also, lots of issues when trying to use passthrough and keep speakers off (only TV internal speakers on). I can get this to work, but various things trigger it to come back on, or even activate the BDP. I've gone into the trigger setting of the AVR setup menu and tried different settings to stop this. Right now, I have it to Manual and Low. Not sure if this is right since these setting are not explained at all.

Also, when watching Netflix or Disney+ from TV to AVR, 4K is sometimes not recognized, and Dolby Atmos never shows on the display front of the AVR for Atmos programs. It comes up as DD or DD+ only. I only have a 5.3 (3 subs) setup, but Atmos should still read on the display front I would think.

Also, watching a DTS HD MA bluray disc, it shows up as DTS X MA on the front display. Is this right? I noticed having to increase the volume be about 10dbs just to be able to hear it. Why would it be so much quieter than DD?