Really bad game lag no one else is getting?

I transport my laptop from y mother's house to my father's house every week. At my mother's house I was playing Team Fortress 2 and the lag was unbearable. I tried playing Minecraft and I tried multiple servers which resulted in the same problem. So after seeing if my browser was working, which it was perfectly, I just gave up on gaming for that week. Soon after, I went to my father's and the same thing happened. We tried Team Fortress 2, Minecraft, and Magicite; none of them working. I tried a system restore and shutting down my PC for a while and none of them worked.