Zoom Low Resource Warning, but System Resources are not low.

We have had a number of issues with users complaining about the Zoom "low resource" warning, which is weird as not only does it not look like the devices are working overly hard/consuming lots of resources, but were getting it on old both old and new laptops only! Not on desktops (which are considerably older). 

Here is an example. 

Has anyone else experienced this?