c++ - why do game engines prefer static libraries over dynamic link libraries -

i've been reading few gaming books. , prefer create engine static library on dynamic link. new c++ not highly knowledge when comes static libraries , dynamic link libraries. know static libraries increase size of program, dll link libraries loaded need them within program.

[edit]

i've played games seemed used dll's load in sound, lighting, , not individually. level loading up. cause don't need when @ game menu.

dynamic link libraries need position independent; can cause performance inefficiencies on processor architectures.

static libraries can optimized when included in program, e.g., stripping dead code. can improve cache performance.