Purpose of Screen Recording

I am conducting a usability test of my web application for my research. It's a one-page analytical dashboard. The question is, will I get any useful data from screen recording during the test?

Existing research work says that there is virtually no correlation between cursor movement (speed/click rate) and perceived usability of web-site. Since my dashboard contains just one page, I cannot track any navigation through screen recording. So, am I missing something, or there is indeed no point for me to do screen recording for this usability test?

I would appreciate any help/opinion on this! Thanks :)