slowness for video class rooms

I am experiencing slowness in whatever video classroom I chose to watch. I have enough bandwidth, however, I see the videos are not utilizing the full bandwidth and suffer low resolutions and lots of delays. I am posting here before I raise it as a trouble ticket to check if others experience is the same

Update: I have opened a case CASE 02112535 as no matter what environment i tested the videos are annoying breaking almost all the time. not smooth no matter what resolution I chose.