Thinking back on it, the infrequent syringe spans, and them usually being so scattered across the map is crazy.
Viewing post in Dr. J. Ferret Reclaims The Living comments

Okay, nevermind. Finally got the hang of it. Yeah, just like other comments. A performance issue when it hits around 15 perks (good and bad)or less. It just makes the game super laggy to the point it was moving at only a few frames per second. I don’t think it’s feasible to get the 1,000 goal as it stands.