Important Note Before the Review: It is important to clarify that Grand Theft Auto V was never officially released for the PlayStation 2. The game was originally released in 2013 for PlayStation 3 and Xbox 360, by which time the PS2 era had ended. If you are seeing a file labeled "GTA V Legacy PS2 ISO," it is almost certainly a fan-made modification (mod)—typically a total conversion of GTA: San Andreas designed to look like GTA V.
The following review covers the experience of playing that specific fan-made port on PS2 hardware (or emulation). Gta V Legacy Ps2 Iso
These are the real ISOs you should play: Important Note Before the Review: It is important
Countless YouTube videos show "GTA V on PS2 gameplay." These are almost always: Option A: The Definitive PS2 GTA Trilogy These
The video description usually contains links to "the ISO." These links lead to survey scams (complete 30 offers to unlock) or link shorteners that pay the uploader per click. There is no ISO at the end of those surveys.
If your goal is the feeling of GTA V on PS2 hardware, you have two legitimate options.