RGH consoles (especially older Corona or Trinity boards) can suffer from slow NAND reading. The "Updated" release often includes a pre-patched xex that adjusts the hard drive streaming buffer, reducing stutter in the highly detailed outdoor environments (like the "Ashes" level).
The way Metro is meant to be played—no HUD, deadlier combat, and scarce resources. Why Update Your Version? metro last light complete edition jtag rgh updated