Advanced Effect in settings can now control the screen flickering.
If you feel uncomfortable with the screen flickering in Chapter 4, you can turn it off.
v1.0.1 Update
Source: Steam Community (opens in a new tab)
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 19238150 · public branch
Steam updated · First observed