I would personally turn off LED clear motion. It trashes gaming (in my opinion of course)Yes, it's only really noticeable with clear motion on. LED Clear Motion is Samsung's name for black-frame insertion aka backlight strobing. It's excellent for 60fps games and doesn't add any lag but with the expense of some flicker and loss of brightness.
When I’m home from work I will check and see if my 65Q90r does this same thing with that setting on. (I’ve never used it)