Slow streaming on atv3 download speed

I have a 1080p Apple TV. I just did a speed test and I have a download speed of 25 mbps. I have my atv3 plugged into a base station. I find that when I play trailers I get slow start up and will often stop a couple of times to catch up with the streaming. I've called cable company and all is well with internet, any suggestions to speed things up? Thank you.