It is highly optimized for systems with 2GB to 4GB of RAM and can often run smoothly without a dedicated graphics card.
Trusted sites like Uptodown and Neowin maintain version histories where you can find the specific .exe installer. Installation Steps: Older versions of MEmu (Windows) | Uptodown memu app player 5.1.0 download
Some legacy apps and specific "farming" macros for games like Final Fantasy Brave Exvius are known to run more stably on the Android 5.1 kernel provided in this build. It is highly optimized for systems with 2GB