Dust in cab while driving

I have a ’12 Commander XT 800 and I do most of my riding on back country dirt roads. I find it gets extremely dusty inside the cab of my Commander while riding over ~20mph. It is easy to see the dust coming in through the sides of the SxS and up through the space behind the seats between the seats and the dump box, like there is a vacuum inside the cab. It is very disappointing to ride in these conditions, really like my SxS other than that issue but usually end up taking my Outlander when I ride for that reason.
Does anyone else have this problem or a solution? I will mention that I do have the half windshield installed…maybe that makes a difference?? I tried searching the forum for others with this issue but did not find much.