The white flash is a millisecond type thing for me too, and occurs probably once or twice a night. Seems pretty consistent with what everyone else is reporting. I received new firmware last week, and the white flashes are unchanged. They're still occurring, but with no more or less regularity.
I've already mentioned it to the guy who is taking care of my crooked panel, but I'm not sure if he logged it with his guy at LG. We were both more concerned with the jailbars left and right of center. I should know more later in the week, and I'll be sure to bring up the flashing again.
Lots of minor annoyances for me, but nothing too dramatic:
-Loss of picture when switching back to my AVR input from the UHD player. I'm thinking this has something to do with going from native/upscaled 4K back down to 1080p. It happens every time I switch from my UHD Player (HDMI 2) back to my Tivo (AVR on HDMI 1.) The TV says no signal is found. Requires an input toggle, then all is well.
-Roku 3 requires "high" black level on the TV, never had this issue with any other set prior to the G6.
Last edited by BLeClair12; 05-17-2016 at 02:06 PM.