There are lots of reasons why this could happen. At a minimum, it could be isolated to your ISP. To determine the actual cause, you should look into using
AWS logging. AWS provides a logging mechanism so you can see what's happening when your video is requested from a user. You can also look into using AWS caching by enabling
CloudFront.
FREE Windows desktop software for creating
BIF (Trick Play),
Direct Publisher (MRSS, JSON), and
FireTV feeds @
GitHub/rrirower.
No programming knowledge required.