✦ OptiScaler Client
> ⚠️ Disclaimer: This is not an official OptiScaler project. I am not affiliated with the OptiScaler team. This is a personal project developed without any commercial purpose. Anyone is free to try and use this software at their own risk.
OptiScaler Client is a modern, high-performance desktop utility designed to simplify the installation, management, and update of the OptiScaler mod across your entire game library. Built with C# and Avalonia UI.
Screenshots
- Game management after installation
🚀 Key Features
Game Discovery
- Multi-Platform Auto-Scanner — Scans Steam, Epic Games, GOG, EA, Ubisoft, Battle.net, and Xbox/Microsoft Store libraries in parallel. On Linux, only Steam is scanned automatically.
- Custom Folder Scanning — Add any folder as a scan source for DRM-free or standalone games.
- Manual Game Addition — Add games by selecting the executable directly.
- Drive Root Filtering — Limit scanning to specific drives.
- Smart Exclusions — Pre-configured exclusions for non-game entries (e.g., Wallpaper Engine, Steamworks Redistributables).
- Cover Art Fetching — Automatically fetches game cover art from Steam API and SteamGridDB with local caching.
Installation & Uninstallation
- Quick Install / Uninstall — One-click toggle per game directly from the main view. Automatically downloads components if not cached.
- Auto Install — Detects game directory structure automatically, including UE5/Phoenix game layouts.
- Manual Install — Select the target executable manually for non-standard game structures.
- Bulk Install — Install OptiScaler across multiple games at once with platform filtering, component selection, and profile application.
- Injection Method Selection — Choose the DLL injection method:
dxgi.dll, winmm.dll, d3d12.dll, dbghelp.dll, version.dll, wininet.dll, winhttp.dll.
- Backup & Restore — Original game files are backed up before installation and restored on uninstall.
Component Management
- OptiScaler — Core upscaling mod with stable and beta version channels.
- Fakenvapi — Compatibility layer for AMD/Intel GPUs, installed alongside OptiScaler when needed.
- Nukem's DLSSG-to-FSR3 — Frame generation bridge that converts DLSS Frame Gen to FSR3.
- FSR 4 INT8 Extras — INT8 shader injection for non-RDNA 4 GPUs.
- OptiPatcher — ASI plugin loader, automatically configured with
LoadAsiPlugins=true in OptiScaler.ini.
Profiles
- OptiScaler Profiles — Create, edit, clone, and manage INI-based configuration profiles.
- Easy Mode Editor — Simple toggle-based interface for common settings.
- Advanced Mode Editor — Full section-based settings editor with search and sidebar navigation.
- Default Profile — Set a default profile that is applied automatically during Quick Install and Bulk Install.
- Built-in Default — "OptiScaler Standard" profile ships out-of-the-box with sensible defaults.
Network & Proxy
- Supports system proxy settings and
HTTP_PROXY / HTTPS_PROXY environment variables.
- Also supports explicit proxy configuration from app settings (including auth when required).
- Network settings are persisted in app configuration.
Settings & Customization
- Default Versions — Configure default OptiScaler, Extras, and OptiPatcher versions for Quick Install.
- Beta Channel Toggle — Show or hide beta versions in all version selectors.
- GPU Detection — Automatically detects installed GPUs with platform-specific providers and discrete GPU preference logic.
- Preferred GPU Selection — Choose which GPU is used for installation decisions.
- Scan Source Management — Enable/disable per-platform scanners and configure custom folders.
- Cache Management — View and delete cached OptiScaler and Extras versions to free storage.
- SteamGridDB Integration — Optional API key for improved cover art fetching.
- Clear Application Cache — Full reset: delete all stored data (games, covers, config, analysis cache).
UI & UX
- List & Grid Views — Switch between compact list and card-based grid layouts (preference saved).
- Real-Time Search — Filter games by name as you type.
- Edit Mode — Reorder games via drag-and-drop or arrow buttons; hide/show games.
- Technology Badges — Visual indicators showing detected DLSS, FSR, XeSS, DLSS Frame Gen versions.
- Platform Badges — Icons for each supported game platform.
- Toast Notifications — Non-blocking notifications with progress bars for downloads and operations.
- Status Bar — Footer with real-time operation feedback and GPU info.
- Loading Overlays — Animated indicators during scanning and startup checks.
- Window State Persistence — Window size, position, and maximized state are saved across sessions.
- Configurable Animations — UI transitions can be disabled in Settings for performance.
Localization
Full interface translation in 14 languages:
| Language | Language |
|---|
| 🇬🇧 English | 🇯🇵 Japanese |
| 🇪🇸 Spanish | 🇰🇷 Korean |
| 🇩🇪 German | 🇳🇱 Dutch |
| 🇫🇷 French | 🇵🇱 Polish |
| 🇮🇹 Italian | 🇷🇺 Russian |
| 🇧🇷 Portuguese (Brazil) | 🇹🇷 Turkish |
| 🇨🇳 Chinese (Simplified) | 🇹🇼 Chinese (Traditional) |
📖 Usage Guide
Getting Started
- Find your games — Click "Scan Games" to automatically detect installed titles from all supported platforms. You can manage scan sources or add custom folders in Settings. For standalone games, use "Add Manually".
- Select a Game — Click "Manage" next to any game, or use Quick Install for a one-click experience.
- Install OptiScaler — From the Manage window, choose version, injection method, components, and profile, then click "Auto Install". Or just hit Quick Install from the main view to install with your configured defaults.
- Bulk Install — Use the "Bulk Install" button to install OptiScaler on multiple games simultaneously.
- Launch & Tweak — Start your game normally. Press
Insert to open the OptiScaler in-game menu and adjust upscaling settings in real-time.
Profiles
- Navigate to the Profiles tab in the sidebar.
- Click "New Profile" to create a custom configuration.
- Use Easy Mode for quick toggles or Advanced Mode for full INI control.
- Set a default profile in Settings → Manage Default Versions so it's applied automatically during Quick Install.
Uninstalling
- Quick Uninstall — Click the Quick Install button on any game that already has OptiScaler installed.
- Manage → Uninstall — Open the game management window and click Uninstall.
- Both methods will restore original game files from backup and clean up all OptiScaler artifacts.
🛠️ Installation & Requirements
Platform Support
Instructions
- Download the latest release asset from Releases.
- Extract the package.
- Run
OptiscalerClient.exe.
Notes
- The app is self-contained, so no external .NET runtime installation is required.
- On Linux, automatic scanner sources are focused on Steam libraries.
- Manual add/install flows currently target executable files (
.exe) for game selection.
🛡️ Security & Antivirus False Positives
Is this software safe?
Yes, OptiScaler Client is completely safe and open-source. However, some antivirus programs may flag it as suspicious due to false positive detections.
Why does this happen?
- File Downloads: The app downloads
.zip and .dll files from GitHub (OptiScaler, Fakenvapi, NukemFG)
- Heuristic Detection: Antivirus software may flag download behavior as "potentially unwanted"
- Unsigned Binary: The executable is not digitally signed (code signing certificates cost $100-300/year)
Common False Positives
- Zillya:
Downloader.MLoki.Win64.10 — Known for aggressive heuristics
- Other AVs: May show generic "downloader" or "trojan" warnings
What you can do
- Verify the Source: Download only from official GitHub Releases
- Check VirusTotal: Upload the file to VirusTotal.com — most reputable AVs will show clean
- Review the Code: This is open-source — you can inspect all code before running
- Add Exception: Whitelist
OptiscalerClient.exe in your antivirus settings
Transparency
All downloads are from official sources:
- OptiScaler:
github.com/optiscaler/OptiScaler
- Fakenvapi:
github.com/optiscaler/fakenvapi
- NukemFG:
github.com/Nukem9/dlssg-to-fsr3
The application never collects personal data, connects to third-party servers, or performs any malicious actions. All source code is available for audit.
🤝 Contributing
We welcome contributions! If you'd like to improve OptiScaler Client:
- Fork the project.
- Create your Feature Branch (
git checkout -b feature/AmazingFeature).
- Commit your changes (
git commit -m 'Add some AmazingFeature').
- Push to the branch (
git push origin feature/AmazingFeature).
- Open a Pull Request.
📄 License & Acknowledgments
License
OptiScaler Client is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
Copyright (C) 2026 Agustín Montaña (Agustinm28)
Acknowledgments & Third-Party Software
- Special thanks and deep respect to the OptiScaler development team for creating and maintaining this incredible software that enhances gaming experiences for countless users worldwide.
- OptiScaler: The core upscaling technology that makes this possible.
- fakenvapi: Essential compatibility layer developed by the OptiScaler team.
- OptiPatcher: ASI plugin loader by the OptiScaler team.
- NukemFG (DLSSG-to-FSR3): Frame Generation bridge by Nukem.
This client application is merely a frontend interface to help users more easily manage and install the amazing work done by the OptiScaler team and other contributors. While OptiScaler Client itself is licensed under GPL-3.0-or-later, the third-party components it downloads and manages may be subject to their own respective licenses.
Developed with ❤️