Need a light-weight emulator to run Android Apps on Windows 7

I’m playing a roleplaying game on mobile, I have to have it run auto-played for hourly a day. My battery is crying :frowning:
Thus, I have an old laptop running Windows 7, and I have tried to run that game on Bluestacks, but it often got lag and crashed. Can anyone please propose to me a soft emulator which is lighter than Bluestacks and can run Android Apps on Windows 7 for many hours without lagging and crashing