I have the following problem with my TV UE55KS8090:
After about 60 minutes of watching, the picture starts to flicker extremely. If I then remove the TV from the power for several hours, it works again for about 60 minutes.
Since even the Samsung menu flickers, it doesn't seem to be due to the picture source. The error occurs both when using internal apps (Netflix, Prime Video) and when watching via HDMI.
I have already completely reset the TV and performed a power reset. Neither has helped.
Here is a video and an image of the error.
Thanks for any feedback.