The Intel chipsets (GPUs) are not very good “performers” period when it comes to OpenGL. The earlier models (1000,2000,3000) were plagued with driver problems with OpenGL, and they also failed to support many of the later OpenGL features (2.0+)…and therefore V5’s latest display features will not work at all on those chips.
However, the later models (4000, 5000) do seem to have better support for the OpenGL feature-set… Most (not all) of V5’s display features are supported by these GPUs, but that does not mean that they are now all of sudden good performers. Yes, the features do and will work…but the performance will be significantly less than most other GPUs. In other words… If you have a 4000 and you want real time shadows to display, then you will be able to enable shadows and they will work…but your display performance will drop quite a bit, and will drop more than what you would see when using the other GPUs (NVidia, AMD).
The recommendation for V5 is that if you have a choice between Intel or NVidia/AMD GPUs, then don’t choose the Intel… If you don’t have a choice, and your system comes with the Intel chip embedded (i.e. Laptop, MacBook Pro 13"), then just know that many of the more advanced display features will work, but at a significant decrease in performance.