4A Games’ rendering programmer Ben Archard has told RPS that Metro Exodus targets 1080p at 60fps with NVIDIA’s real-time ray tracing features enabled. As Archard claimed, 4A Games is well aware that there are three cards that will support RTX (RTX 2070, RTX 2080 and RTX 2080Ti) and they will see what profiles they can get for each.
What this ultimately means is that there might be an option to enable higher/lower quality levels of real-time ray-tracing (alongside a universal option to completely enable or disable the effects). Basically, think of it as the Hairworks tech that comes with an option to enable/disable it and various options for how detailed that effect can be. Or at least that’s what Archard implied.
“We’ve got an existing engine with the existing systems, so a direct comparison isn’t really fair. Yeah, when you first do it and first implement [ray tracing] in a naïve way, it’s more expensive, it’s slower. But if you optimise, yeah, you can get there. You get it up to frame rate and that’s what we’ve been trying out. Actually saying what the final difference is, I can’t, because we’ve not finished.”
Metro Exodus releases in February 2019 so 4A Games will have a lot of time in order to optimize its RTX features in order to achieve a 1080p/60fps experience. From what we know so far, Metro Exodus will be using RTX for real-time ray tracing global illumination and real-time ray-tracing ambient occlusion.