High CPU usage from mono-sgen when packaging electron applications without asar

[ArekSredzki]

Hello,

I use electron-builder for packaging my Electron application. As of recently I've experiencing unreasonably poor performance when packaging the application for windows from os x.

This only occurs when I am not using asar, which is a form of tar-like storage with random access support.

My original ticket is electron-userland/electron-builder#351

[anaisbetts]

I'm not super concerned with optimizing how long it takes to make packages though I'd take patches for it. Also, every production app should use ASAR because it significantly increases start time performance on Windows (and helps somewhat on other platforms too)