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The RS-540 not being a Native 4k projector doesn't help, combine that with 2k masters and you're not watching 4k.
Despite what people think, increasing Chroma information is NOT enough to make things look drastically different unless you are sitting incredibly close.
You might consider selling the RS-540 and getting a Native 4k projector, if 4k sharpness is your main goal. I would sell it soon while the selling is still good, because the RS-540 may devalue rapidly in another 1-2 years when 4k is the standard and no longer the exception with projectors, or it may not (I don't know, but always a chance).
Some movies might look better with increased Chroma (never tested it enough to know personally), but in my vast years of image and video editing, it hasn't really worked like that. Compression causes more of a color shift before it really causes a noticeable difference in sharpness, at least IME, but it varies depending on the content. Now if something is really highly compressed (like a JPEG or certain MPEG), then yah it can lose a lot of sharpness, but the lossy compression levels aren't really that high with video on our Blurays and UHD's, more so in streaming, and even then it's gotten pretty good now. Resolution is resolution for the most part, unless you are cooking the image using special upscaling or sharpening techniques or some combination, then it becomes complicated. Upscaling algorithms don't always increase the quality either, they can have the opposite effect sometimes, depends what weakness a particular edit has.
People see what they want to see though, so don't want to start any argument on that point.
Last edited by coderguy; 11-29-2019 at 04:28 PM.