Uh... With Google Fiber, you should be able to download a 2GB movie in 16 seconds. 2GB in 10 minutes is 26Mb/s. Which is about 2% of the speeds you should be getting (1,000Mb). You should get ahold of Google and have them rectify this. Even if you're paying for their slow plan, (100Mb, as opposed to 1,000Mb), you're still getting 26% of your speeds. Either one of these is unacceptable.
And if that's the speed you're getting via ethernet, I cannot imagine what you're getting via wifi. Make sure all of your devices have a gigabit wireless radio, otherwise your devices' wireless radio will be the bottleneck of your home network. Here is a 1,200Mb wireless adapter, so that will give you a little bit of overhead even. If you have an older laptop with a slower wifi radio, that will improve your speed greatly. It'll also work just fine with a desktop. Also, I'm not sure if you're using Google Fiber's wireless router, or your own, but if you're using your own, you need to make sure it has wireless speeds at least up to 1,000Mb/s, because most do not.
Also, make sure that both your router and your devices (phones, laptops, PCs, Chromecasts, etc.) are using 802.11ac and 5GHz wifi. Google Fiber will be completely wasted on most people's home networks without changing things like this. If all of your devices are using older radio hardware, then you might as well just find a different ISP.