I saw this on Reddit today and now I am trying to resist the urge in purchasing a 4K AVR and try to resolve the issues I've been seeing with ABC and other channels. This is coming from someone who works in retail selling TV's. Can anyone with a 4K receiver comment on how the TV performs using AMP when the AVR is doing the 4K upscaling of cable content?
"Here are some of the complaints I've heard and reasons why people have returned the KS8000.
Light bleed. Maybe this is just a Samsung thing (my Samsung is terrible in this regard as well), but if you ever plan on watching in a dark environment, or watch movies with black bars on the top and bottom, expect some very noticeable and annoying backlight bleeding.
My 65" really doesn't have much in the way of light bleed. I've looked hard for it, so I'm either lucky or oblivious
Colors: the color on the KS8000 just seems... off. People are orange, grass is glowing neon green, reds are almost hot pink. I realize that people like Samsungs for their bright and vivid colors, and fewer and fewer people seem to talk about color accuracy these days, but if realistic-ish colors are important to you then I wouldn't go with the KS8000.
I wasn't impressed until I switched to Warm 1 rather than Warm 2. Standard looks pretty good to my eyes too. I run everything in HDR+ mode though.
Shiny Bezel - this might seem petty but a lot of people complain about the silver shiny bezel on the KS8000, and I don't blame them. Last year the JS8500, amazing TV, had a silver/brushed aluminum finish around the screen and even that was distracting in high light environments. I was really hoping they would change that this year, and they did, but they made it even worse! If you watch a movie or play a game during the day and you don't have black out blinds on your windows, then you can expect a bright reflection on the bezel under your screen.
Something else that I don't notice to be honest.
Light zones - this TV handles contrast fairly poorly and any time you have a dark scene with one bright spot, blooming will be very obvious and annoying in a lot of cases.
Seems fine to me with Dynamic Contrast turned off and after playing with the contrast level for a while.
Motion Processing - last but certainly not least, this TV might actually have the worst motion processing out of any of the mid range to high end TVs this year. They went for super processed, super smooth motion on the KS8000, and while it looks nice on very first glance, it quickly becomes obvious that the TV's video processor just can't keep up. Tearing, glitches, blocking, etc. Anytime there's a lot of action and movement on the screen the TV can't keep up with all of the details and you'll notice tons of hiccups and glitches. This is especially bad when the TV is processing a 1080p image up to 4K, it can't seem to handle both. When you go look at the TV in a store, ask them to show you the TV playing a 1080p image so you can see the TV's upscaling capabilities, and make sure it's something with action, not just still images (in fact, you should never judge a TVs quality based on the UHD demo content they show you in the store). You'll see exactly what I'm talking about, and once you do you won't be able to un-see, which means you won't be happy with the TV. You can fix this issue by pre-upscaling your image, either using an upscaling BD player or console, or running your video with a home theater receiver with 4K upscaling. If the TV only has to process motion and doesn't have to upscale, it seems to do okay, but as a stand-alone unit that TV is downright embarrassing."
Oh good grief, that's some grade A drama llama stuff there. I do run mine through a Denon X4300h and have the AVR set to upscale (auto mode), and it is marginally better than having the TV do it, but to call the TV's upscaling and motion handling "downright embarrassing" is well...downright embarrassing. The biggest difference to my eyes is that with the AVR upscaling 1080i sources (FiOS) to 4K 60Hz I can leave AMP set to Auto and there's little to no SOE. Quite why that should be I don't know, but there it is.