You can install custom APK files via the specialized menu (using the three-bar menu option). Conclusion
Because the files are already local, the actual installation process takes a fraction of the time. Gameloop Offline Installer
Manually allocate half of your total PC RAM and CPU cores to the emulator. (e.g., If you have 16GB RAM and 8 cores, allocate 8GB RAM and 4 cores). You can install custom APK files via the