One of the biggest issues with Dolphin on Android is "Shader Compilation Stutter." This is the pause you get when entering a new area for the first time. Build 11505 handles the shader cache pipeline very efficiently. Once you have played through an area once, the stutter rarely returns, making the experience console-like.
Not every game runs perfectly on low-end portable devices, but version 11505 excels at these:
This specific version (11505) is a popular custom build of the Dolphin emulator, optimized for lower-end Android devices (better performance, less stuttering). "Portable Mode" means all settings, saves, and config files are stored in a single folder on your device (instead of scattered in internal memory), making it easy to backup, move, or run from an SD card.