I tried that as soon as it was released for the G35CZ...doesn't work. I am sure they could fix this, as the motherboard in the G35CZ looks identical (same specs also) as the Z490-F. They wrote a custom bios for the G35...so we can't take advantage of the latest bios for the Z490-F, if that is what is causing this issue. Not sure...and I think ASUS no longer cares.
My bios is BIOS Version: G35CZ.1003 (the latest). I did contact the support site...but they kept giving me the brush off stating that they were waiting for a reply from the engineering folks. I gave up on them. Since other ASUS motherboards and this video card support this feature, it seems like it would be easy to update the G35 to support it to. Physically, the motherboard appears to be a Z490-F with a different bios.
Update: With the info from the FAQ link you provided I just downloaded GPU-Z and it states that the problem is the motherboard . I made sure that CSM was disabled etc.. (I followed ASUS's guidance included in the FAQ). It appears the problem lies in the BIOS for the G35CZ.