Hey there!

Thank you for sharing your issue with us here. My name is Michelle and I’m part of the Razer Cortex technical support team. I am deligted to be of your assistance. 

As it may cause performanence issues, Razer Cortex disabled the FPS overlay in games with anti-cheat and UE4 technique. Our engineering team is finding a new way to resolve this issue in a future version. 

We apologize for the inconvenience. 

Hope you had a HAPPY NEW YEAR!

Michelle

It wasn't fixed though not one part of synapse works with fortnite. 

It could be a compatibility issue or an overlay conflict with another app. Have you checked if any other overlays (like Steam, NVIDIA gta south africa, or MSI Afterburner) are running? Sometimes disabling those can help.

Hello I have the same issue, I play BF2042 and cortex FPS overlay was working fine until today , shortcut ctrl+shift+q does nothing, i tried a couple of online guides , still nothing , anyone has any idea why ?

I do not believe it is anti cheat as it was working until 2 days ago & there were no new updates

I tired now to enable NVIDIA overlay from the setting it made the cortex one work