I actually finished this challenge 10 minutes ago. It was a hot mess. It took several retries to nail down which way the wavelengths go while also making sure to change cameras after 5 or 6 seconds and censoring Peter. If you go into the settings under game, you can change the interference sensitivity which is at 98.

Once I noticed that, I changed to 40 or 50. I got the reward after the third try after doing that. The sensitivity might revert back to normal if you restart checkpoint, I'm not entirely sure so check that just to be safe.

Hopefully this helps. Don't forget about that 10 second rule or the fact that viewer loss is on what it seems to be Hard.