Yes. Though everything is in the eye of the beholder; there are some JVC owners (particularly the models up) who go so far as to insert an HDFury in the chain to strip HDR but keep WCG, because HDR requires a lot of lumens and lumens reduce contrast. This however is purely up to your tastes. As far as color goes, no HDR doesn't look "washed out" like it does out of the box once the updated settings are applied.Is it at the point now where with these settings, HDR UHD looks better than SDR UHD? Before it didn't seem like that was the case.
By autocal I mean hooking up a compatible Spyder meter and running color, gamma, etc. calibration. See Manni's thread here: http://www.avsforum.com/forum/24-digital-hi-end-projectors-3-000-usd-msrp/2246658-jvc-calibration-software-v6-2015-models-x9000-x7000-x5000-rs400-rs500-rs600.html and pay attention to post 9&10 for an updated process + HDR background. I just got done doing it myself.Wait, what do you mean by Autocal it ? I uploaded the BT2020 profile but I don't remember doing anything else to it. The Gamma D was already set to the JVC site's recommendations. Is there something else I should of done ?
You don't absolutely have to do it, you can adjust by eye with a good calibration disk to get most of the way there, but autocal will help correct gamma/color balance for your environment. It's not what a full ISF calibration with Calman, etc. would get you, but it's a nice step up from calibration disks. Takes some doing - I didn't get it right the first time. And you need a compatible meter. Worth it though IMHO.