Ar Tonelico Qoga : Knell of Ar Ciel [BLES01102]

Update: LLVM works and this game now runs at 100 % speed and at least 15 fps on a desktop CPU.

Random hanging is finally 100 % completely fixed. The only remaining issue is that the main menu crashes when a save file exists. But you can still save and load ingame.

For some reason, on the builds from some days ago I get on all Gust games this error spammed infinitely on the log, which grows several GB:

{PPU[0x1000000] Thread (main_thread) [0x00b5fa1c]} cellFs TODO: cellFsStRead(fd=4, buf=*0x86807bc0, size=0x10000, rsize=*0xd00ff038)·U 0:01:57.813330

Any help?