Steam - Final Fantasy 9
For specs and logs:

Crash dump file:

When Dagger was getting ready to summon Ramuh that is when it crashed during the hill giant boss fight.

~~Other issue
After defeating the monsters called Mover the game got stuck in a loop to where the only solution is a restart.

I don't know if this helps but the music continues to play, the character models continue to move but the visible status effects are frozen.
Pause still works and if you try to escape, you get the message about unsaved data.

Video link: