I dowloaded 6.86f AI 1.6.2 map as soon as I bought the game. I played several games all night without any problem. The next day it started to freeze in the beginning of the game, almost 10 or 15 seconds in the game. I tried other games too, they lasted longer but eventually froze again! Even the preloaded custom maps do freeze sometime!
Edit: Well, found out that turning the game visuals from “reforged” to “classic” helped. But being able to play in the first night and then not is confusing! Whatever.
Edit2: Well, now it freezes in the end of the games. Progress made but ehh..