Thank you for reaching out to the Zoom Developer Forum. At this time, the Web SDK only supports an output of 360p. We are working to provide 720p output in an upcoming release but I understand that this won’t help when it comes to the CPU usage issues that you are encountering, this is related to a known issue which we are actively investigating and have tentatively planned a fix to be released in version 1.9.0. Please keep an eye on our release notes for updates to when that is released. We are planning to release that version in early Q1 of 2021.