NVIDIA markets Multi Frame Generation 3x/4x as an RTX 5000 exclusive feature. But is this actually a hardware limitation, or is it software-enforced?

I'm curious if anyone has looked into this. Specifically: - Whether Ada Lovelace architecture is technically capable of MFG 3x/4x - Whether the limitation lives in the driver or the hardware itself - Any prior research on nvlddmkm.sys or DLSS internals