Running Tekken 2 on a PSP is generally stable, but technical nuances exist depending on the firmware and version used.

How to Get & Play Tekken 2 on PSP (EBOOT Guide – Safe & Legal)

Typical eBoot/Emulation Context

He grabbed the PSP. His fingers slipped on the buttons. He wanted to turn it off, but the power switch did nothing. The volume slider did nothing. The father character reached Paul and put a polygonal hand on his shoulder.

Before diving into technicalities, let's address the appeal. Why go through the hassle of creating an Eboot when you could play Tekken 7 or Tekken 8 ?

The game retains the cinematic character endings that were a hallmark of the original PlayStation release.