David Vonderhaar found working on the ‘Call of Duty’ franchise to be a “complicated” experience. The 51-year-old developer previously worked on the money-spinning video game franchise, and David has suggested that it was more difficult than some fans might imagine. During an interview with GI.biz, David explained: “When you get too big, when you get so big and so popular and so much money at stake, it just gets complicated. “The best experiences I’ve ever had making games were the smaller things that got made inside of those larger games. That was what was really fun, that’s when I was alive a…