Windows 8 x64 - Acer Aspire S3 Intel Rapid Start not working

Hi, I installed Windows 8 in my Acer Aspire S3 (hdd+20 gb ssd) and the only thing not working properly is this thing.

I installed:

AHCI_Intel_11.5.0.1207_W8x64U_A

IRST_Intel_1.0.0.1006_W8x64U_A

And the rapid start service is actually running but if I don't manually run RapidStartConfig.exe this app, Windows just sleeps normally (never to hibernation past 120 mins).

There is something extra to do?

Thanks