Skull Canyon total video memory only 1024

Hi everyone, I’m having some issues with the video memory rhino is detecting. It only shows 1024, when the machine has 16gb and the dedicated video memory is 8gb.
Any clue how to convince rhino that there is more memory available?
Actually zooming on viewport is a bit slow…so I guess it is only accessing that amount of memory.

Thanks!
Gucci

Forgot to mention, the system is the Skull Canyon:

Intel 6770hq with a iris pro 580