The hair room is extremely old tech that hasn't changed since Poser 5 or 6, if I remember correctly. It's been largely abandoned, including by creators, except very few. Personally, I hate it and just leave it there. 

Apparently, Bondware is looking into updating or changing the Hair Room for Poser 14, but so far that's only been a footnote in a Poser Software newsletter so far, so we don't know anything about it.

Personally, I create hair using Blender with a plugin called Hair Tool. You can find various methods of creating what we call hair cards (stripes of polygons with transparency maps to simulate hair strands) if you search for things like "game hair tutorial" or "realtime hair tutorial".

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Feel free to call me Ohki!

Poser Pro 11, Poser 12 and Poser 13, Windows 10, Superfly junkie. My units are milimeters.

Persephone (the computer): AMD Ryzen 9 5900x, RTX 3070 GPU, 96gb ram.