I'm one of the GeForce Now converts from Stadia, and I am very, very happy about getting my BG3 back.
Now, my TV's GFN app tells me BG3 is "currently not supported on this device". Understandably, since controller support still hasn't been added to the PC version.
I hope Larian may reprioritise and launch this feature soon. I think running around exploring with my character using the controller on Stadia was a far preferable experience to the point and click UX. The controller combat interface took some getting used to, but I thought it (and/or I) improved considerably over time from the initial EA launch.
I also think Nvidia should consider those of us who have mouse + keyboard plugged into our TVs, and let us get to play our strategy games on the big screens without demanding controller support, but that's for another forum.