I'm playing Jak and Daxter: The Precursor Legacy on my fat PS2 with the OPL 2048 beta off an internal HDD. Whenever I enter large open areas like the ones in Rock Village, there's a big microstutter that occurs whenever crossing set invisible points; especially noticeable when turning the camera. Does the game do this on a real disc, or could this be an OPL issue? I was already using compatibility modes 3 and 6, and adding in 1 and then 5 on top of it didn't help. I remember Ratchet 3 getting some pretty severe slowdown specific to OPL, but that was the entire game slowing instead of a suddenly freezing on a frame for longer than normal with the game still running like here.