So I got a shiny new computer a few months back, salivating about how smooth it would handle UDK as opposed to my old PC. However upon downloading the most recent (Jan 2012, Dec 2011, Nov 2011) versions of UDK none of them work properly for me :-(

My problem (from what I can tell at least) happens when double clicking on a material (can be an existing one or a new one) to bring up the material editor window, a process that should be nearly instantaneous. For me however it looks like my PC practically freezes, can't do anything else on any other program for about a solid 5 minutes. Any changes made in the material editor also take a ridiculously long time.

I get the same crappy results whether on DX9 or DX11. I have the very latest drivers for my graphics card.

Here are my specs:

Windows 7 Home Premium 64 bit
Intel Core i7-3930k CPU @ 3.20GHz
GeForce GTX 560 Ti


As it turns out I use Webroot Secure Anywhere antivirus, if I just shut it down my UDK works as it should and fixes the material editor issue - so from what I can tell at the moment without doing much else on UDK at the moment, this pain in the *** issue is solved :-)