This article gives some solutions if you are worried about your internet speed:
https://support.zoom.us/hc/en-us/articles/201362463-Wireless-WiFi-Connection-Issues

ACM does take into consideration that some of these solutions are not possible and a poor WiFi signal should not hinder your learning. If you are concerned, please speak to your tutor(s).

You can always watch a recorded session after the event by clicking on the Panopto tab in the relevant Canvas course.