Launch very slow

it need very long time to launch my test project to my PC and android phone. but I have seen that the buildTools just use very little of my CPU(clang use 1% to 3% of my cpu in 0.77 GHz). so is there one way to make the buildTool use my CPU as many as possible and speed it up? or is there a way to use all my cpu core? I mine multithreaded for compile?

I got a high speed when I close the UE4Editor window. so is there a way to do the packaging in command line? and how can i see the build log without a UE4Editor window?

Hello,

Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes. If you are still experiencing the issue you reported in the current engine version, then please respond to this message with additional information and we will investigate as soon as possible. If you are experiencing a similar, but different issue at this time, could you please submit a new report for it.

Thanks!