FPS limiter with NVInspector not working with FS9

[swiss1 1]

I install the new NV driver 295.73 on my system FS9 (windowXP SP3/GTX 460 1024MB/Intel core duo 3.33GHz E8600) expecting touse the FPS limiter from NvidiaInspector.The new driver is very stable and my NVInspector setting (see picture) works, except the FPS limiter .In FS9, I set the FPS on unlimited and 29 or 30 in the NVInspector. My real FPS remains max., which means fluctuation between 55-66 FPS.Does it realy works with FS9? Should I change something in the fs9.cfg file?

[swiss1 1]

here the picture