A common issue some users are having with PC gaming systems is that they can not open Isadora Stages full screen on external displays. This is often caused by an sound utility called Nahimic .
If you are experiencing this issue, please search your running processes in Task Manager (ctrl + shift + esc) for the word 'nahimic '. If you find it listed, you will need to uninstall the Nahimic audio services.
Most commonly this audio service is preinstalled on MSI and Alienware laptops, but it may be installed on other PCs.
This Reddit Guide outlines how to remove the software on MSI machines, but the steps will be similar on other systems.
If you are unable to uninstall the nahimic services please create a support ticket and we will do our best to help you with the configuration.