FX5600: NVIDIA's "native" Refresh Rate override

Hello,

I don't know why but, since this option to override refresh rates from within NVIDIA driver control panel was introduced, it has never really worked for me. All games ran only at 60Hz. Riva Tuner has no such features either. So I had to use ReForce to override monitor refresh rates instead of overriding rates of the card.

Now, as I saw that this situation is not common among other users, I'm really curious if there is anything wrong with me.

Please do not offer to re-install the system, as it is what I keep doing once a couple of months.

System: 865 Chipset, FX 5600 from MSI, 17" CRT from LG.

Any ideas?