I have no problems with it, if its not you changing windows and it not loading I unfortunately do not know what the problem is.
The 4.4 version. I boot up game, I see the loading bar, it loads into main menu. Then it starts getting laggy and in a few seconds everything freezes, not even alt+f4 or ctrl+alt+delete works. Im running it on windows 10. Here is my debug log if its of any use https://justpaste.it/aw00j