Yes the original is very expensive. It depends on the resolution and the GPU used:

RTX 5060: 9.9 ms at 1080p

RTX 5070: 10.2 ms at 1440p

RTX 5080: 13.7 ms at 2160p

RTX 5090: 8.2 ms at 2160p

Source: https://www.youtube.com/watch?v=3EfLjmdG29Q&t=600

RTX 5070, 9.6 ms with NR of Optiscaler in Stalker 2. It's payable and I enjoy new visual. Especially shadows and faces are incredibly detailed and precise. Landscapes not so much.