Directx11 rendering cant be enabled.

[f8tenl]

Hi,

I just bought a new laptop and installed udk on it, but when i look at switch rendering it is greyed out.
The spec of the laptop are pretty high (geforce 555m, 8gigs ram and 2.2 ghz processor) so cant I turn dx11 rendering on because i have a mobile graphics card or should it not be geryed out?
And is there another way to set the dx11 rendering mode like in the config files.

Thanks in advance.

[mktwo]

Does the laptop have Nvidia Optimus or some such wizardry enabled?
If so, check if UDK is in fact using the 555m.

[f8tenl]

So i looked it up and found out that i had Nividia optimus, changed the setting and now i can run it with dx11.
Thanks for the quick response