When you say "Response was slow", what do you mean exactly? "Response" of what? The UI in general, or some specific part? Were you looking in the node network, or 3D preview? When you double-clicked an object (node, in the node network?), it crashed immediately? Do you know what graphics card you have and do you have the latest drivers?
Sorry for all the questions, but it's surprising it crashed so easily as it seemed quite stable in testing, in general. We'd like to get to the bottom of it, of course.
- Oshyan