Unable to open Control Panel in Elden Ring

I have installed Special K (Test version) to try and fix the stuttering issues I am seeing in Elden Ring.

It seems to help but I am unable to open the Control Panel in game with Ctrl + Shift + Backspace.

I have a PS4 controller connected and couldn’t open it with that either (although I wasn’t exactly sure which buttons to use to do so, I tried all sorts of combinations between the Start Button and options Share etc to no avail.

I set updates to Discord and that version didn’t work either so rolled back to the latest Test.

I have RTSS running but exiting that doesn’t fix the issue.

I have also tried with Steam Overlay on and off.

I am using a Gigabyte Aero 15x9 with Nvidia RTX 2070 and Intel Core i7. Connected to a 1440p external monitor with the laptop display turned off.

Any help would be appreciated.