How does the NVidia G-SYNC Pendulum Demo toggle G-Sync

The NVidia G-SYNC Pendulum Demo (Download NVIDIA Tech Demos) toggles G-Sync. How does it do this? With NVAPI? Can’t be using NvAPI_GSync_EnumSyncDevices since this is for Quadro cards only. How does it do it for GeForce cards?

Thanks

Thank you for contacting NVIDIA developer forum.
We have sent your query to the respective team for details and we will get back to you on same.

Thanks,
NVAPI Forum Moderator

I’m dealing with that problem, too.
How does it do this with some API?

Thanks

Dear @PepperWu

I have pinged the concerned team again. I will get back to you as soon as I receive the information from them.

Thank you.
NVAPI Forum Moderator.

Dear @PepperWu

Our technical team informed that NvAPI SDK does not have an API to toggle the GSync state programmatically.

Thank you.