There are somethings on both Nvida and AMD side that you can do a bit of a driver override but it’s more like force DLSS on vs turn this particular feature on from what I can remember from their windows based applications or forcing fake frame generation on and off via override and I’m not going to mention or consider third party applications since that’s not official.

But considering that this new stuff is lumped under the DLSS moniker and not something separate like frame generation, I do have doubts that this can easily be just turned on and off even at the application driver override.