I believe that's referring to video memory, not general system memory. Although you have plenty of that too.
But no harm in looking into that - in the main game menu, alt tab out and run Task Manager-processes. How much memory is ck3.exe using? I don't know of a way offhand to check video memory usage, maybe GPU-Z ?
Then please edit that pdx_settings, and find the
renderer line. Change it as follows:
"renderer"={
version=0
value="OpenGL"
}
It will be slower, but is it more stable? Either way if I can get new copies of that file and error.log after that test, thanks.