Make sure you have the following settings:

• V-Sync: off
  
• Screen Shake: 0.0 (zero)

Restart your save after applying these settings otherwise the fix will not work!

Here are what my settings look like (click to enlarge):

As you can see from the video settings screenshot posted above, the game assumes your monitor refresh rate is 60Hz. Which makes sense because that is the Deck's native refresh rate. However, the Deck allows you to change the monitor refresh rate to save power. SIGNALIS doesn't know that. Certain game events will consistently cause the screen to go irreversibly black if you change the Deck's refresh rate from 60hz.


Shooting on the Deck with a Screen Shake value other than zero will cause the screen to "fly away" due to shooting. I have no idea why this happens. But disabling Screen Shake will solve this problem.

I hope these fixes worked for you. Please like to increase visibility of this guide!

Special thanks to digger82 who helped me solve the V-Sync problem.

If anyone can find a way to increase the camera turn speed when the game goes in first person, please comment below and I will add it to the guide.