Unity major CRASH Importing Asset Package (950MB)

So, ive had this problem all the time i have had Unity.
Importing large packages basicly BLOWS UP dozens of icons on taskbar.
Heres a picture of the problem.

Now, how can this happen? Unity somehow manages to crash my EXPLORER. Wtf.
This only happens with large files, over 500Mb.

Please help, this is seriously very annoying. The PC needs to be Restarted when this happens, restarting Explorer.exe doesnt work. Im using Windows 8.1 64Bit, and Unity5. Though this happened also with Unity4.

Bug Report + Asset you are importing :slight_smile:

Having the same issue , any solution ?