I'mma name that symptom that comes after a sudden break from Nightcore as "Nightcore withdrawal."
Headaches creep in as soon as you stop playing, but you're still hungry for Nightcore. It'll result in extreme lethargy as withdrawal symptoms progress, which is pretty accurate to what I'm feeling right now.
Come to think of it, I also get the same headache when I play Redout for the same amount of time. That game makes you race at speeds of ~1,250 mph






