One way to potentially get better performance that has nothing to do with the app is to switch from your phone’s default power profile to a performance mode (usually available in battery settings).

Three other settings worth toggling for better performance include the GPU Palette Conversion, Preload Textures, and Disable Hardware Readbacks options.

Enabling this on a phone with only two big cores could result in slower speeds.

This can also bring a significant speed boost but requires at least three big CPU cores.

Another handy tip from the horse’s mouth is to enable the Multi-Threaded VU1 option (found in the Three-line menu button > App Settings > System).

The EE Cycle Rate should be changed to a negative number, while the Cycle Skip should be set at a positive number.

This can be accomplished by visiting the Three-line Menu button > App Settings > System, then choosing the EE Cycle Rate (Underclocking) and EE Cycle Skip (Underclocking option) fields. The developer also recommends that those with slower phones try underclocking the emulated console’s CPU.This is handy if you’ve got one game that requires plenty of tweaks, while the rest of your library works just fine with minimal changes. In case you didn’t know, you can tap and hold on a game listing to adjust settings only for that title. The Vulkan API generally delivers a fast experience but might not deliver the best experience for all games. Try changing the graphics renderer from OpenGL to Vulkan, for one.

Fortunately, the developer includes several features and offers plenty of tips. It doesn’t help that hundreds of phone models and dozens of processors are out there. Being an advanced PS2 emulator, AetherSX2 can be a major challenge for smartphones.

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