5
Android emulator for Android
(lemmy.dbzer0.com)
I think you'd have an easier time getting parallel apps going than finding an Android emulator that performs as well as you want, and would probably be less restrictive
In the end I found an alternative solution. The app I wanted to use was on the galaxy store under a different package name so I used that as the original app and installed the modified app with same package name as the Google play one