Armored Core VI Runs Better On PlayStation 5 With PS4 Pro Build; PS5 Version Lacks Compiler Optimizations

wccftech.com:

Armored Core VI Fires of Rubicon runs well, for the most part, on PlayStation 5, but it seems like there's a very simple way to make the game run at steady 60 FPS at a small cost in visual quality.

As reported by well-known hacker Lance McDonald on X/Twitter, the PlayStation 4 Pro build of the game actually runs at steady 60 FPS on PlayStation 5, making for a much smoother experience. This is the same as Elden Ring, whose native PS5 version didn't run as well as the PS4 Pro build.

Despite Bandai Namco telling us that the PlayStation 4 Pro build of Armored Core 6 maxes out at 30fps at 1800p resolution, just like Elden Ring, if you boot up the PS4 Pro build on a PlayStation 5 the framerate locks to 60fps. Much smoother than the PlayStation 5 native build. pic.twitter.com/diDRmDVQcA

— Lance McDonald (@manfightdragon) August 25, 2023

The PlayStation 5 version of Armored Core 6 runs GREAT almost all of the time, but it does have moments of slowdown that aren't hard to see whatsoever. They mostly happen in cutscenes but also when exploring areas with heavy weather effects.
(Yes, this is Framerate-priority mode) pic.twitter.com/mxK0sGGjNy

— Lance McDonald (@manfightdragon) August 26, 2023

Interestingly, Lance McDonald discovered why both Armored Core VI Fires of Rubicon and Elden Ring run worse on PlayStation 5 with their native builds. Apparently, the PS5 builds have no compiler optimizations, something that impacts performance considerably.

By the way I recently reverse engineered Elden Ring’s PS5 executable and the reason their game runs worse in their PS5 builds compared to PS4 is because their PS5 builds have no compiler optimisations whatsoever. It’s that simple.

— Lance McDonald (@manfightdragon) August 25, 2023

Not counting the