[GAME BUG]: Apple M4 Pro - CUSA03173 Bloodborne - Bright lights on human's face models

[eureka417]

Checklist (we expect you to perform these steps before opening the issue)

• I have searched for a similar issue in this repository and did not find one.
• I am using an official build obtained from releases or updated one of those builds using its in-app updater.
• I have re-dumped the game and performed a clean install without mods and the issue is still present.
• I have disabled all patches and cheats and the issue is still present.
• I have all the required system modules installed.

Describe the Bug

Anytime the face model of an NPC or the player's one are visible, an almost epileptic light flashes intermittently over the face. This stops happening as soon as the face is no longer visible or you equip a hat where the face is not visible.

This seems to affect both M3 and M4 series chips.

Reproduction Steps

Removing the head equipment provokes this behavior.

SEIZURE WARNING
https://github.com/user-attachments/assets/c98bd10a-cd87-4ca1-bcaf-317f389a1882

Seems to happen with any NPC that has a custom face (i.e: Alfred). Doesn't affect the Doll or Gehrman.

Specify OS Version

MacOS 15.3

CPU

Apple M4 Pro

GPU

Apple M4 Pro

Amount of RAM in GB

24GB shared between CPU/GPU

Amount of VRAM in GB

24GB shared between CPU/GPU

Log File

shad_log.txt

[eureka417]

I found that creating a bald character mitigates part of the issue.

bb.-.bald.mov

Nonetheless, when the camera is afar from the character, the issue persists.
When it's closer it doesn't seem to happen.

bb.-.bald.2.mov

Could this be related to hair shaders? Human beards, dogs and beasts hair have visual glitches as well.

bb.-.hair.mov

shad_log.txt