: Run the LSEFree.exe or setup file and follow the on-screen prompts to complete the installation. Key Features of the Free Version

Many free downloads are bait-and-switch. You download 2GB of data only to discover it’s a 60-minute trial or a "lite" version with half the features locked.

The latest update (2025-2026) significantly overhauled the optimization system: Streamlined Presets : The previous 24-preset system was replaced with six clear presets

to "Prefer Maximum Performance" and lock your FPS to a target you can consistently hit to avoid stutters. Microsoft Flight Simulator Forums optimization guides for a specific game, or are you looking for low-end game recommendations