Receiving the video requires that you have the proper amount of space needed to load the video temporarily. The video will be loaded in to your Web Cache. If this area is full, the video will be slow streaming. To clear the web cache
1. Quit Internet Explorer, Firefox, or any other web browser
2. Click Start, click Control Panel, and then double-click Internet Options.
3. On the General tab, click Delete Files under Temporary Internet Files.
4. In the Delete Files dialog box, click to select the Delete all offline content check box , and then click OK.
5. Click OK.
Hope this helps!