Ray tracing is typically seen as a trade-off between visuals and performance – enhancing lighting realism at the cost of FPS. However, there's a second trade off that is talked about less ...

Tests show that RTX Mega Geometry, a new Nvidia technology recently added to Alan Wake 2, increases framerates and improves image quality in heavily ray-traced scenes.

It's all about availability. Well, that and price. Oh, and performance. Maybe some better upscaling, too. You get the idea ...