The following documentation explains it very well. https://docs.unrealengine.com/latest/INT/Engine/Basics/DerivedDataCache/index.html Cheers

What is DDC.dpp?

anonymous_user_f89beac21 (anonymous_user_f89beac2) April 13, 2014, 6:19pm 2

whenever i start a new project, it is the longest loading file. i was just wondering what it is.