I'm still learning my 83A90J, so more experienced users will come along shortly.
I am using the "Keep It Classy Tech" Guide, so for your use case have the AVR going into the TV HDMI 3 and make the following changes. On HDMI 3 TV use these settings:
Picture Mode: Custom
Auto Picture Mode: Off
Light Sensor: Off
Brightness: Max
Contrast: 95
Gamma: 0 for Day Time, -2 for Night Time
Black Level: 50
Contrast Enhancer: Off
Peak Luminance: High
Sharpness: 50
Reality Creation: Manual, 20
Smooth Gradation: Low (off when you game)
Motionflow: Custom, Smoothness Min, Clearness 0 or 1 (latter is black frame insertion - experiment)
Cinemotion: Low for Broadcast and UHD Bluray, High for Netflix/Amazon Prime
Advanced Color Temperature Basic (this is important!)
- R-Gain = -3
- G-Gain = Max
- B-Gain = -6
Feed the same HDMI an HDR signal of some sort and then ensure Gradation Preferred is selected.
Try that. The latter colour changes are applicable to SDR, HDR and Dolby Vision.