Get a quad-core with hyperthreading 2.8 GHz and an insane video card.
These almost always are using an x86/Atom Android image, which runs faster because it doesn’t need to emulate the CPU, running x86 code on your host CPU (much like the iOS Simulator). You may see some articles or tips about using the Intel HAXM, BlueStacks, Genymotion, Android-x86 or some other high performance Android emulator. Android emulator very slow windows 10 Settings > Tools > Emulator (or Android Studio > Preferences > Tools > Emulator on macOS), then select Launch in a tool window and click OK.