After about four weeks I got a reply from LG support with a firmware file attached.
Here is some information about the file:
Filesize: 304347 bytes
It's an encrypted ZIP file that can be opened with LG Screen Manager. With that file, I've ...
There's not really any significant amount of extra main memory usage for buffers due to having dual 4k-displays.
Indirectly the total main memory usage might increase because some will tend to run more programs at the same time, have more windows and documents open at the same time, etc. - and that will lead to higher main memory usage.
It is correct that ...