UE4 4.11 Preview 7 -- slow compile times -- unusual?

I pulled the latest release of 4.11 preview 7 from github and it compiled fine. However, when I compile my game in the engine it’s taking a ridiculously long time. The compile is moving slow on the clang++.exe parts. In 4.10 my compile time was around 1 minute, now it’s around 45 minutes.

Is this normal? Is there a feature I should disable? Nativize blueprint assets is NOT checked.

See screencap for reference:

bumpity bump

bump…is this normal?