After some digging in I found out that ASProxy is a DLL made by Astrill, the VPN provider.
It appears this problem plagues many users including GTA 5 players who crash all the time because of this (me too actually!)
I didn’t have this issue with UE4 before so something curious happened.
Surprisingly my colleagues are using Astrill as well and use the same version of OS and Editor and yet they don’t have this problem.
This said, for those of you in China etc who use it, you can download the Portable VPN client from the official astrill website.
It solves the problem for me 