Been happening a lot recently.

On Byakko EX during the falling phase when the second set of orbs come up the game mildly freezes and audio stutters.

On O7 Normal once during the missile phase the game froze.

Steam version.

Tried reinstalling drivers, game, you name it. Getting a bit irritated with the issues in the game now and I've had to switch to PS4 because it's getting ridiculous.