#data.p4k

How does the game use the data.p4k (for me 38.3 GB) and why do you put the files in .p4k? i have an empty "data" folder (i delete but still shows after i lauch 3.0.0/3.0.1) which was originally use 2.6.3 to store files from data.p4k When data.p4k is extracted i goes into the data folder and...