Creating the frames with raw GPU is better because they are exactly what the game engine wants to render. But that's unbelievably expensive.

DLSS is absolutely the answer for gaming for the masses. DLSS will continue to improve and is far, far cheaper at creating intermediary frames than rendering them for real.

I buy my cards for AI first and gaming second, though. So DLSS is little use to me. 5090 is a bit of a weak improvement over the 4090 for me, but here we are.