Floor 15 crash!

[Aquatylys]

Lately I get crash everytime I'am on that floor...its like last boss in Naryu,before altmost everyone got crash there...I got like 8 crashes in 20 runs...the worst one was when Naksun had 1 hp:))

Any solution to these crashes?...yea I know that the floor don't cause this, is from the game engine, but every crash was there!