I ran through the game and I can't recreate the bug. Can you tell me what you were doing so I can try to trigger whatever it is you're going through? I also don't know what platform you're playing this on, but I've only tested it on Windows.
I'm on Windows 11. I had a manual save in the middle of the museum, by the colored statues, and I would load it and immediately run down to the curator. Then hold CTRL to skip the dialogue and start the fight. I had been going through the fight with various different skills selected and trying different strategies, which would usually freeze a minute or two into the fight, so I don't know if specific inputs are the problem. I did eventually get past it, after that my game stayed running as normal for much longer. Since then I have had occasional freezes in various situations, such as in the middle of dialogue and in the skill menu. At one point I had the game open on a dialogue scene and left the computer for a while, and came back to see it had frozen even without any input.
Okay, I pushed out an update that should fix it. I can't tell since I can't recreate the bug to check, but I hope it works.
Hm, sorry, I'm not sure what's causing it, but I believe it's some kind of compatibility problem? A cursory google search lead me to this: https://forums.rpgmakerweb.com/index.php?threads/rpg-maker-mv-games-graphics-wil...
Edit: Actually, there seems to be a plugin or sorts for this? Let me test it out really quick.