Graphical issue Grass

[novalight]

How to fix this?
tried reinstalling game over and over again with no luck
even deleted my games where ut3 config's are placed etc after the uninstall

http://users.pandora.be/Light/grassproblem.JPG

it's no heating issue, only happens with the grass
i think patch 1.2 is causing this but ain't sure...

[MTL]

its a driver issue. I had this when I first got UT3. Uninstall everything related to your display drivers. Get a driver cleaner like from guru3d.com choose your brand of card and sweep.
This basically removes any traces of your driver.
Reboot and reinstall drivers and it should fix it.