Get the latest firmware (4.10.15) if your TV came with firmware 3.00.63 or later, it fixes a brightness fluctuation bug that has been around since at least 3.00.63.
You can be cautious and wait another week to update, but so far its been nothing but positive news from other owners at avsforum.
rtings settings will cover most of the basics, like turning energy saving mode off. Another one I'm not sure if it comes turned on by default is the channel logo luminance adjustment, that one you want to make sure is off too.
The default setting for the logo adjustment is 'low'. The instruction manual recommends setting it as 'high' though. There is a section with regard to image retention/burn in and that is one of the changes that LG recommends. IIRC there isn't an 'off' setting on the C8.
Nope I was wrong, just checked, there is an 'off' for the logo luminance adjustment. However, as I understand it, the high means that the adjustment to the logo luminance is high i.e. the logo is less prominent on the screen so less likely to create image retention/burn in. I hope so since that's how I have the setting. Someone put me straight if I am wrong, please.
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