Bug during Laxasia Boss battle

[Emiya Chloe]

Every time when I lose the boss fight against Laxasia (no matter phase 1/2) - it's LITERALLY every time, because I still didn't managed it - after death cutscene "Lie or Die" i have black screen and nothing more. Game just becomes stucked on black screen, nothing helps but the program closing. But when I close it no any crash report appears, so, it's not a crash, it's some bug. I don't know what to do, cause the boss is very tough and it's quite annoying to restart the game each time I die.

[Safarel]

With literally any steam game when you faced any bug first you must do is go into game properties and check game files integrity

[Emiya Chloe]

Ok, i figure it out. Probably, the issue was in framerate, i switched from 144 to 60 and it worked.