Whenever I try to watch a story, it is horrible to view it and I can barely see what's going on because of its quality. Can somebody let me know why and how to fix it?
When you see stories in that form, it means your Internet connection is extremely low. You have two choices:
Connect to a better network (preferably WiFi) and then open the Stories again.
Wait for the stories to load properly and then view them. This also has connection to the Internet bandwidth.