OptiScaler lets an existing game upscaler feed a different rendering backend: the game’s selected DLSS, FSR or XeSS input is distinct from the output chosen in OptiScaler. It is a free game modification, with per-game compatibility constraints. Use it only where the game’s rules permit modifications; the developers warn against online use because anti-cheat can trigger bans.
Editorial review: 5 October 2026 UTC. This page reviews current publisher documentation and release metadata. Downloading, signature validation, installation, game testing and performance benchmarking were not performed for this review.
Stable release and official download
The latest stable GitHub release checked is v0.9.4, published 18 July 2026. Choose its release asset, not GitHub’s source-code ZIP. The project also offers a nightly channel; newer experiments there do not establish that a stable update exists.
The publisher-listed archive is Optiscaler_: 55,016,448 bytes, or 55.02 MB using decimal units (about 52.47 MiB). Its publisher-reported SHA-256 is 575cb4df86611609. This is release metadata, not a hash we measured from a downloaded archive.
The team says it has no official website or official manager app. Start from the project repository and its linked channels. A third-party manager is not automatically an official product because it uses the name. OptiScaler is free; read the publisher’s impersonation warning before paying for a purported official download.
Is it the right tool for your game?
- Suitable starting point: a permitted offline game that already exposes DLSS 2+, FSR 2+ or XeSS, with a documented compatible input and output.
- Check before changing anything: game patch, graphics API, GPU and driver, and the game’s entry in the compatibility list. An entry describes community/project observations, not our test result.
- Use the game’s own settings first: if they already provide the output you need, an extra loader may add unnecessary complexity.
- Choose a different workflow: if your aim is only a supported DLSS library or preset change, compare DLSS Swapper. It does not provide the same input-to-output routing.
GPU and API compatibility
The current README covers DirectX 11, DirectX 12 and Vulkan, with different backend combinations. Experimental OptiFG is a DX12 feature; seeing a frame-generation setting does not prove your game supports it. For FSR 4, the documentation distinguishes officially supported RDNA 4 and RDNA 3 desktop GPUs from experimental workarounds for other hardware. This is not universal FSR 4 support for every AMD, Intel or NVIDIA card.
Do not infer a minimum Windows version from the archive name. This catalogue covers the Windows setup workflow; Linux/Proton has separate requirements in the release notes. Read those before treating a Windows recipe as a Linux instruction.
Licence and bundled components
OptiScaler’s repository licence is GPL-3.0. The release notes list Fakenvapi 1.4.1, Nukem’s dlssg-to-fsr3 0.130, FFX 2.3 SDK and XeSS 3.0.1 SDK alongside OptiScaler. The tool’s GPL label does not transfer to every bundled SDK, model or vendor library. Check the archive’s individual notices before redistribution. Free access is separate from permission to redistribute every component.
A controlled setup plan
- Record your game version, API, GPU/driver and existing mods. Save a clean baseline and back up files that could be overwritten, outside the game folder.
- Compare the archive hash with the exact release asset’s metadata. A matching hash establishes a byte match to that reference; it is not a malware verdict.
- Follow the automated installation guide and your game-specific entry. The correct directory is the real rendering executable’s folder, which may be nested beneath the launcher’s folder.
- Read the included batch script before running it. Review overwrite, deletion and optional-download prompts rather than accepting every option. Avoid mixing instructions for a nightly script with a stable package.
- Change one output or setting at a time. Record the result and preserve a path back to the original game files. See the verification and recovery guide for the checklist.
When the overlay or game fails
The known-issues guide starts with executable location, the active in-game upscaler and overlay conflicts. It specifically calls out RTSS, including compatibility problems with OptiFG. Reproduce one change with other overlays closed before changing several configuration values at once. Do not disable anti-cheat or system protection to force a mod to load.
For removal, use the project’s uninstall guidance together with your backup and file record. Shared library filenames can belong to the game or another mod. Restore an overwritten original instead of deleting it solely because its name appears in an uninstall list. We have not validated this recovery workflow on a game installation.
