[Bug 5707] Settlers IV is slow in WIne 0.9.16+

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5707

------- Additional Comments From [e-mail]  2007-31-07 10:38 -------
One problem is Settlers are heavily using 16 bit bitmaps which means they have 
ro be converted back and forth to 32 bint if your graphics card doesn't allow 
16 bit.

I wonder, is there a way to force the game to use 32/24 bit bitmaps?