This could be a problem with DNS, but not necessarily though…
Keep in mind that this type of integration may have unwanted results; just like any other device not all wireless adapters are compatible with all available systems, besides the fact that such integration may be against your local regulations (such as FCC or others) since the whole system must be certified including adapter and antennas.
We suggest using the adapter that came preinstalled or contacting your system manufacturer to determine which product is approved for your computer and proper means for the integration.
set IP to auto, look up DNS servers in your area (check with your internet provider for regional servers) and manually set the DNS servers IP address(s).
if you are trying to stream movies through multiple floors you are going to run into connectivity issues. does the issue tend to last longer when you are closer to the wireless router, or does the frequency increase the further you are away?
check your internet settings try to configure allocation of cache your system can hold/clear your cache