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About this mod
Decompresses Oblivion BSA files to reduce loading times and stuttering.
- Requirements
- Permissions and credits
- Changelogs
BSA files are archives used to store game assets, they can be both compressed and uncompressed. Back when Oblivion was released in 2006 for old generation consoles the overall size occupied by the game mattered so vanilla BSA archives use zlib compression to reduce overall assets size on the disk. However, assets need to be decompressed by the game on the go which takes extra time leading to longer loading times and additional stutter when moving in exterior worldspaces while cells being loaded in background.
BSA Decompressor recreates BSA archives without zlib compression, so the game is limited only by your hardware disk system performance. All vanilla assets remain in uncompressed BSA archives.
Run decompressor and point it to the Oblivion GOTY installation (which includes Shivering Isles expansion).
If you later verify Oblivion files in Steam, you need to run decompressor again because Steam will redownload original compressed archives.
Performance comparison:
Additionally, average loading speed decreased by 0.6 seconds. (Will vary per hardware)
Test methodology:
- Framerate - 3 2-minute runs per variant, using the Benchmark mod.
- Loading speed - 10 runs per variant, loading the same save from a fresh launch of the game.
Testing by VishVadeva
Related mods:
Fallout: New Vegas BSA Decompressor
BSA Decompressor recreates BSA archives without zlib compression, so the game is limited only by your hardware disk system performance. All vanilla assets remain in uncompressed BSA archives.
Run decompressor and point it to the Oblivion GOTY installation (which includes Shivering Isles expansion).
If you later verify Oblivion files in Steam, you need to run decompressor again because Steam will redownload original compressed archives.
Performance comparison:
Additionally, average loading speed decreased by 0.6 seconds. (Will vary per hardware)
Test methodology:
- Framerate - 3 2-minute runs per variant, using the Benchmark mod.
- Loading speed - 10 runs per variant, loading the same save from a fresh launch of the game.
Testing by VishVadeva
Related mods:
Fallout: New Vegas BSA Decompressor