I'm facing the same problem as yours where i always have limited access to the internet when I'm trying to connect to my campus wifi. while all my friends can connect without any problem, I already tried to reinstall the middleware for the wifi but still the problem continues.Anyone can help?

about the dota you can just switch the preferred graphic card to the integrated graphic, for me it the mouse lag and when there's more than 5 players on the screen it will lag. But after i switched to the integrated graphic , no more lag hurray..............