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NVIDIA Releases RTX Remix 1.5 With RTX IO Compression to Cut Remaster Sizes

The update reduces packaged game size and load overhead so players use less disk space and modders face fewer performance costs.

Overview

  • NVIDIA has publicly released RTX Remix 1.5, which adds a new RTX IO compression model integrated into the Remix packaging workflow to compress remastered assets.
  • The company says the compression has already reduced packaged sizes for example titles, with Portal with RTX reported to fall from 25 GB to 17 GB and Half‑Life 2 RTX from 80 GB to 50 GB.
  • New packaging presets let modders split packages between 1 GB and 16 GB to make downloads and distribution more manageable.
  • RTX Remix 1.5 also adds modding tools requested by the community, including automatic Smooth Normals to smooth older geometry and improved viewport light controls for easier lighting edits.
  • NVIDIA published 'RTX Remix Skills' text files that give AI coding agents actionable instructions so automated tools can handle routine steps in the remastering pipeline, a change that could lower technical barriers for modders and speed workflows.