What is lsfg-aether-upscaler?

LSFG-Desktop is a desktop application that improves the visual smoothness of games by generating extra frames between the ones your computer actually renders, and by scaling up the image to fill your screen more cleanly. The problem it solves is that many games struggle to hit high frame rates on mid-range or older hardware, and the resulting choppy motion is uncomfortable to play. Frame generation fills in the gaps between real frames, making motion look smoother without requiring the GPU to render everything from scratch. Integer scaling ensures that when you render at a lower resolution and scale up, pixel edges stay crisp instead of blurry, which is especially valuable for retro or pixel-art games. The tool works as a layer between the game output and your display. It captures frames as they leave the game, applies whichever scaling or interpolation mode you have configured, and pushes the result to the monitor. Configuration is done through a per-game JSON profile or through command-line flags. Optional AI-assisted upscaling can refine texture detail but requires an internet connection and an API key, the core frame generation and integer scaling features work entirely offline. You would use this if you want smoother gameplay without upgrading hardware, or if you play older games that look blurry on modern high-resolution screens. It runs on Windows, Linux, and macOS.