Frame generation is limited to 40 series GPUs because Nvidias solution is dependant on their latest hardware. The improvements to DLSS itself and the new raytracing stuff work on 20/30 series GPUs. That said FSR 3 is fantastic news, competition benefits us all and I’d love to see it compete with DLSS itself on Nvidia GPUs.
And warframe has been rewarded with a practically methusalian lifespan for a game in its genre, I hope we see the same for baldurs gate 3 with a similar level of ongoing support and improvement.