If using wireless, try connecting your device to a wired Internet connection such as an ethernet jack, which typically offers a faster and more stable connection than WiFi.
Try accessing the course from a different internet connection, preferably one that is high speed. Other areas of the campus network may provide improved bandwidth or a particular machine may be infected with a bandwidth-consuming virus.
Try accessing the course at a different time of day (during non-peak hours, i.e., morning). This can address any “traffic jams” in usage on the organization/campus network.
If needed, reboot your computer.