What’s Changed

This update introduces Linux support (tested on Ubuntu, CachyOS, and Bazzite) featuring a dedicated GPU detection system and Steam runtime optimizations. A new Custom Version Management system has been implemented, allowing the use of personal OptiScaler, FakeNVAPI, and NukemFG builds. Additionally, FSR 4 INT 8 is now automatically selected based on GPU architecture, and the update includes advanced library filters and an anti-cheat warning system.

Changelog

Added

• Linux Platform Support
  • Compatibility has been added for Ubuntu, CachyOS, and Bazzite.
  • A GPU detection base for Linux was implemented using sysfs and system tools (by @RafaelHGOliveira).
  • Game scanning logic was adapted for Steam and custom sources on Linux (by @RafaelHGOliveira).
  • Important exclusions regarding Proton and the Steam runtime were added (by @RafaelHGOliveira).
  • GPU family detection by ID was implemented to correctly display the model in the main window.
• Custom Version Management
  • Support for adding and managing personal or custom versions of OptiScaler, FakeNVAPI, and NukemFG was added.
  • Custom versions now appear under a dedicated "Custom" tab in the game management window.
  • Any version can now be set as the system default through the version management menu.
• Advanced Scanning Filters
  • New filters in the scanning window allow toggling between three modes:
    1. Scan All: Includes games where compatible upscaler DLLs are not detected.
    2. Hide Non-Upscalers: Scans all sources but hides games without detected upscalers.
    3. Strict Scan: Only shows games containing upscaler DLLs (experimental).
• Folder Cleanup Tool
  • A "Clean Folder" option was added to the game management window to remove corrupt files or residues from previous installations.
• Safety & Information
  • Anti-cheat Warning: Alerts were added for games where installing OptiScaler may cause issues (by @Louloubiwan).
  • Welcome Screen: A one-time introduction screen with platform-specific information was implemented.
  • Help & FAQ: Added instructions for Linux FSR 4 detection and folder recovery procedures.
• Network Connectivity
  • A Proxy Configuration option was added to the Settings tab.

Improvements

• Smart Architecture Logic
  • FSR 4 INT 8 is now selected by default when a non-RDNA 4 AMD GPU is detected.
• UI/UX Enhancements
  • The OptiScaler version selector is now divided into three tabs: Stable, Beta, and Custom.
  • The icon library was standardized for consistency between Linux and Windows.
  • DLL version mapping was implemented for DLSS, XeSS, and FSR to show traditional version numbers.
  • FakeNVAPI and NukemFG are now presented as selectors in the game management window for easier access.
  • Custom sources are now included in the scanning menu of the Games tab.
• Process Optimization
  • GitHub API request handling was improved to prevent recurrent 403 errors and redundant calls.
  • Redundant version info was removed from the Help tab; management is now centralized in Settings.
  • Information was added clarifying that OptiScaler 0.9+ includes FakeNVAPI and NukemFG in the bundle.
  • The system now detects corrupt installations and suggests a cleanup before proceeding.

Fixes

• Linux Specifics
  • A problem where disk paths in Linux appeared repeated or redundant was resolved.
  • An issue where icons appeared broken across the app on certain distributions was fixed.
• Installation & Stability
  • An error where performing an "Update" after an installation corrupted the folder was fixed.
  • A bug where choosing the Stable version as default still installed the Beta version was resolved.
  • An issue where the uninstaller deleted original game files shared with OptiScaler was corrected.
• UI & Logic
  • The cover art toast getting stuck when no SteamGrid key was set has been fixed.
  • A crash triggered when displaying games in List Mode was resolved.
  • A bug where opening the client for the first time showed no available versions was fixed.
  • The logic for FakeNVAPI/NukemFG options being active on versions 0.9+ was corrected.
• General
  • GitHub Issue templates were corrected and improved (by @PhrozenByte).
  • Localization fixes were applied for Simplified Chinese (by @juji-fun).

New Contributors

• @RafaelHGOliveira made their first contribution regarding Linux support.
• @Louloubiwan made their first contribution with the Anti-cheat warning system.
• @PhrozenByte made their first contribution in GitHub templates.
• @juji-fun made their first contribution in Simplified Chinese localization.

Full Changelog: OptiscalerClient-1.0.4...OptiscalerClient-1.0.5