I think you will find a large range among users for this one, depending on how bright the image is, which of course depends on screen size, screen gain, throw distance and room interaction. Some like auto iris, some can't stand it. My setup is similar to yours. I still like Auto 2, but I open my manual iris a bit (I have an RS 500). This is really a matter of preference. There's no "best for everyone" here.Yes, I have the Panasonic not sending the separate HDR signal, so no gamma trigger.
What type of iris adjustments are you guys doing for 4k vs 1080? I’m on auto 2 with the itis knocked down a couple notches.