Virtual Backgrounds not working even though computer qualifies

As per system specs your hardware is fine it seems:

https://support.ringcentral.com/article/RingCentral-Meetings-Virtual-Background-Hardware-Specifications.html

But default this options seems to be disabled. Once an option is enabled, Hosts and Participants can find the additional Video Background settings in the Meetings for Desktop.

ref: https://support.ringcentral.com/article/4637.html?language=en_US

Make sure the option is enable from your end and you are not running into issues for that

It worked on his previous computer which was of course not as new or speced as high. I checked his account settings to be sure and Virtual Backgrounds are enabled. I believe I enabled it system wide for all my users some time ago. So I'm still not sure why it won't work for him.