[Wine] FPS Anomaly (screenshots)

[aidave]

When I run naiture in WINE (it is a Windows based program that I am trying to move to Linux/OpenSource) it says the FPS is like 500+ with just a block in the center.  Yet the actual visual framerate is quite choppy:

[Image: http://www.naiture.net/snap/wine1.png ]

Here it is running in full, the reported FPS is more realistic:
[Image: http://www.naiture.net/snap/wine2.png ]

Why would the internal framerate of the program be so high, yet look so low?