594 MB update, apparently made by HexaDrive. Framerate now operates at a stable 60 fps making it much smoother than the non-patched version as well as the PS2 original. Only in the most extreme circumstances does the framerate dip and those dips are extremely minor.
- Post processing anti-aliasing appears to have been added resulting in extremely crisp and clean image quality. The original release did not use any sort of anti-aliasing.
- Particles effects are now rendered at full resolution. The PS2 original used low resolution particle effects in order to maintain decent performance. I cannot actually recall if this was also true of the initial HD release but I can confirm that particles are rendered at a much higher quality now.
- Those are the primary changes and they completely transform the game. The entire snow sequence operates at 60 fps a good 99% of the time providing a faster, smoother experience than even the original release. It feels remarkably good.
- Game as a whole is a hell of a lot smoother than before. Even the cutscenes run better than before (usually on par with, or better than the PS2 version). Some of the slowdown in cutscenes seem to be moments that were hard-coded even in the original.
- The VR Training Mode isn't laggy as shit anymore (the grab object segment in VR Training has some slight slowdown, but grabbing and swinging objects in the main game is silky smooth)
- Ardjet fight ran with virtually no slow-down at any moment. Hell, it was fucking up my combo timing because I was so used to slowdowns when attacking her, even in the PS2 version.
- The Anubis battle is like absolute night and day here; the game's performance in that battle even runs laps around the PS2 version (there is literally no slow down when Anubis does his burst attack, which lagged down prior versions of the game, and Anubis simply teleporting does not actually make the game come to a crawl; it was running so well that Anubis was just rapidly teleporting so quickly). I was really surprised about how well Hexadrive improved this one.
- I had a lot of complaints with how the Nephtis 3 fight ran in the HD collection, even at the game's first streaming, so I checked it out. Like the Anubis battle, absolute night and day performance wise; the fight runs pretty smoothly, and has very minimal slowdowns (compared to the old HD version where Nephtis simply boosting around slowed the game to a crawl).
- The 100 LEV battle still runs kinda slow, but better than the PS2/pre-patch HD versions. It's a shame that they couldn't get this running fast, but depending on how this fight was programmed, that could have been probably the hardest thing to do.
- The Compressed Space Anubis battle runs sooo good in comparison to how it used to run.