The scanlines seem to be worse on some monitors. If you change the refresh rate to the highest you will very likely see that there's horizontal lines across the screen, most visible at the edges. They're not super obvious but they are there for pretty much everyone I think but some panels are worse than others. I reduce my refresh for coding etc then if I'm playing games will bump it up to max refresh.
I upgraded to the latest firmware a few days ago, I haven't seen any real changes or fixes but I've also not really looked too hard.
Yeah I literally can't see anything like that even on max refresh, and I am a fusspot over panels on various devices.
I do have the revised model though. Mine is model LC49G93TSSRXXU which supposedly uses half the power consumption, although I saw someone say it uses the same and they measure it differently so I don't know.
I don't have the brightness cranked, so not sure if that's why I see no issues. Anyway, I should stop trying to find them!