Hi, I buy a laptop (Lenovo Y5070) last year and when i connected to my WiFi it is really slow, but its only on my Laptop. My PC ,my other laptop, or my phone have no problem. When I play DOTA2 (on PC) with my other 2 brothers (with their own laptop) we can play normally without lags. But if I play with my Laptop (Y5070) suddenly its lag . But when i check task manager, all apps network usage almost 0%, only few of them not. How to fix ? Thank you.