I'm using a Nvidia GeForce 6800 card with Windows 8 on a new machine.... I realise it's an old card, but I specifically need the S-VHS output it offers.
I'm using it in the UK with a PAL TV (standard - Not HD) and have the latest drivers. The software seems to allow 2 refresh rates 25 Hz and 29 Hz - However, the Nvidia Control Panel always seems to default to the 25 Hz - If I change the TV screen size to 480, it allows me to choose 29 Hz, but as soon as I click apply it goes back to 25 Hz.
I did somehow manage to set 29Hz once, but no idea how I did it and can't replicate it - and I really have tried hard!
Does any one know of any known issues or how I might get around this, as the 25Hz causes flickering on the TV, but the 29Hz didn't seem to when I had it briefly running?
The custom resolutions/refresh rates seem to be for the PC screen output, and not applicable to the TV screen output (s-VHS)?
The highest resolution it offers is 1024 x 786 (which is fine for me), but defaults to 576i (25Hz). For each resolution it also gives 480i (29Hz), but setting this has no effect - It goes straight back to 25Hz.