Yup I had the same thing happen on my win 10 install, it just sat there for a while, I messed with compat settings and everything and nothing helped, went to get some food and a drink, came back and the installer was there, I was all just "WTF?" now as a sort of extension the game suffers FPS issues all over the place, got a weird anomaly where camera and mouse movement is a smooth 60fps or higher, but any ingame animations, both on the bridge or in the tactical view are at 10FPS at best, anyone else had this happen? (sorry for the slight hijack Brex but I get the feeling asking this here will help us both out.)