Hello Hitpawz,
This is odd that you are experiencing this issue with the set-up you provided. Whenever you make changes and apply the material, it will compile the shaders as needed. Although with a very simple material set-up as you described, it should not be taking that long to compile, or giving you such trouble.
First try updating your graphics driver to the latest version to see if this helps resolve your issue.
Could you also provide me with your dxdiag so I can further investigate as well?
Thanks,