Local or normal connection speed results in Internet congestion. That results in decreasing internet speed. In addition, when users try to make connections, this usually happens at the time of some peak activity. Although when you are on your corporate network and by using a proxy server the Internet speed performance may get affected. Many network users may try to keep most of the network administrators away from downloading large files which takes almost an hour. You may ask the network administrator. Also, it can help you in the wavlink extender setup.