Screen 7

The Jigsaw Puzzle
As the camera pans around, letters and an X pattern can be seen on the screen. Upon assembling the various fragments with the aid of the X pattern, three things can be read:
 * "HIS NAME IS", with the big X in the background.
 * "a=Δv/Δt", the acceleration formula in physics.
 * "NEED TO ?"

Analyzing the Spectrogram
Along with the sick beats, the stream also played distinct noises in the background. Using a spectrogram visualization tool to analyze the audio, the repeating text "ANAGRAM IT" can be read.

Risset Rhythm
By analysis of the beats playing in the background, one can notice that the beat appears to accelerate indefinitely. This audio illusion is called the Risset Rhythm : "An audio illusion, similar to the Shepard Tone effect, but that seems to accelerate or decelerate forever.", further confirmed by the acceleration formula present.

The rhythm is named after it's creator, "Jean-Claude Risset". So our X is "Risset".

The Answer
By using the hint "ANAGRAM IT" with the word "Risset", we arrive at the word "Resist", an anagram of "Risset", and the ? in "NEED TO ?".

Therefore our answer is need_to_resist