Why is this deactivated by default ?
After upgrading my project to 4.8 my compile times for small changes went from 8-9 seconds to 24-28 seconds. Then I remembered about this thread and after setting bUseUBTMakefiles to true small changes just takes 6 seconds to compile (that doesn’t change the fact that without UBTMakeFiles things are way slower now, though).
Is there any drawback I should know ?