Wired connection is fine, wireless starts then freezes

Streaming from my pc over the wired network works fine. but when I go to the wireless network, the video starts and goes for about 30 seconds then freezes.  I am using a dsl modem, what bandwith do I need, this is 100mb/sec.  Is there something in the configuration that would help??

How many devices are connecting to the router via wifi?

What type of router do you have?