If you own the game:
Running Resident Evil 4 via Aethersx2 is generally smooth, but if you are using a "Highly Compressed" file on a mid-range phone, you might need to tweak settings to maintain a steady 30 or 60 FPS. Resident Evil 4 Aethersx2 Highly Compressed
To get the best experience running Resident Evil 4 on AetherSX2, you should focus on the .chd format. This is a lossless compression method specifically designed for disc-based emulators. It reduces the file size without removing game data, ensuring that the cinematics, voice acting, and textures remain intact. Unlike "ripped" versions that delete music or cutscenes to save space, a Lossless .chd file provides the full, uncompromised experience. If you own the game: Running Resident Evil
Search for the "Resident Evil 4 PS2 ISO" or the "Highly Compressed" version if storage is a concern. It reduces the file size without removing game
“What was that?” Leon asked, gripping his knife.
With the recent shutdown of AetherSX2 development (due to developer harassment), the current build remains the final version. However, new forks like are keeping the spirit alive. For Resident Evil 4 , the current builds run nearly flawlessly—even compressed versions.