If you search for "aethersx2 apk 32 bits upd better" on Google, you will find sketchy websites promising "Super Speed Ultra 32bit Fix." Many of these are malware designed to infect older, vulnerable devices.
You are missing Vulkan drivers. Set Renderer to OpenGL in Settings before loading a game.
: Keep the Upscale Multiplier at 1x Native to maintain stable frame rates.
If you have a 64-bit phone, stick to the standard build. But if you're rocking a legacy device, this 32-bit update is your best ticket to nostalgia.
If you absolutely need the 32-bit version, the consensus among the emulation community (Reddit r/EmulationOnAndroid, GBAtemp) is that the final 32-bit release is the best you will get. There are no performance magic bullets.
To improve the experience on older 32-bit hardware, you should focus on internal settings rather than just the APK version: Set the Cycle Rate to 75% (-1) or 60% (-2).