Is there a way to turn off the auto device detection on this TV?
No, at least not any obvious way. I have everything running through a receiver and therefore into one input on the TV. For the longest time it would constantly switch between PC, Game Systems, Cable, etc. However, I recently went through the Remote/Device Setup portion on the TV and set it up to control my cable box and receiver. For some strange reason, my input now reads "Charter/Onkyo" which is my cable and receiver, and now it never switches icons or modes, even with PC. I'm not sure if this is reproducible or just a lucky glitch.
No all edge-lit displays do not do that. That is a defect.
Yes, but it is a very common one. It's also one that could be the result of pressure against the screen from cleaning it or picking up the bottom frame the wrong way, or maybe just heat and time causing layer separation. I noticed a lot of Samsung sets with top and bottom LED lighting having visible flashlighting issues in Best Buy showrooms in 2015-16. But of course those sets are in Torch mode and probably run 24/7, etc.
Been playing Hellblade in 30fps mode and the game is really juddery, i've noticed the same thing in other games when i move camera. I'm using game mode. Is there a setting i can change to reduce judder/twitching?
No, at least not without using non-Game Mode and adding a bunch of lag. Low framerate content tends to look worse on some sets than others. The KS8000 is one of these because the screen does not smear much which is actually helpful in making low framerates more tolerable, and it also has a flickering PWM backlight, which makes judder even more obvious. I've gotten used to it.
why isnt the site showing the new FW update? still on 1180.5...
Maybe it's only been released for European models?
For some reason when my Switch input source is selected it turns the Xbox One source on and off which turns my XB1 on and off.. how do I stop that
Try turning off HDMI-CEC support in the TV. Go to Settings -> Expert Settings -> Anynet+ (HDMI-CEC) -> OFF