Why is my internet slower ever since we got AT&T internet?

[wittyfeather858]

I think we use to have Grande Communication's internet. I live in San Antonio, and I think it's only here in San Antonio where we have Grande.

we got AT&T's internet yesterday, since we got something in the mail I think, that said we could get it for a full year for free. But it's so slow! Things take longer to load, and I can't even watch South Park in peace, since it doesn't get to HD when I put full screen and it buffers a lot. It BARELY, if it even did, buffer before we got AT&T's internet. We have AT&T's cell service. so I think that's why we get it for one year free of charge.

they gave us a new router or modem, I don't know.

my dad uses the desktop computer, and he says it's faster, but my PS3's and laptop's internet is slower now