Using compressed ROMs requires specific settings to prevent the phone from overheating or stuttering.
"Play Classic PS2 Games on Android: A Guide to PS2 ROMs Highly Compressed" ps2 roms highly compressed for android
Your compression format is corrupted. Do not use "Ultra" compression when converting ISOs (level 9). Stick to CHD level 5 or CSO level 2 . Re-download the ROM. Playing PS2 Games on Android: A Guide to
There is a "Goldilocks" zone for compression. The format is increasingly becoming the standard for retro gaming. you need to tweak the settings:
When running highly compressed games, you need to tweak the settings: