Originally Posted by HiddenX 
the default ge3.ini has a bug:
ResourceCache.u32SpeedTreeMaxMemUsage_High=100000
last entry should be "1000000" and not "100000"
You count your memory usage from 500k —> 750k -> but at the highest settin it's 100k and i am certain it's supposed to be 1 mil.
Very interesting, Didn't notice that one.
Have you tried it HiddenX ? (will do this afternoon)
And can you shed any light in what values to tweak
to push the grass growing, terrain texture switching
and Actor fading further away from the camera ?
Thanks.