Even on high-end phones, TTT2 on PPSSPP is not perfect. Expect:

To play these versions on Android, you generally need the PPSSPP Emulator and a compatible ISO file.

Since this is a fan mod, the installation requires a few extra steps compared to standard apps.

on an Android device, you must use more advanced emulators capable of handling 7th-generation console hardware: RPCS3 for Android : Some users attempt to run the PS3 version

Approximately 800MB to 1.3GB for the ISO file and textures.

. These fan-made mods attempt to bring the massive roster and tag mechanics of the console original to mobile devices. The TTT2 Experience on PPSSPP