Help Running Gamescope

I just installed "Kubuntu 26.04 LTS - Plasma 6" and have the Steam snap package installed thru Discover. I installed Gamescope thru cmd using "sudo apt install gamescope" and it seemed to be successful. Running "gamescope --version" yields:

[gamescope] [Info]  console: gamescope version 3.16.20+ds-1 (gcc 15.2.0)

Once I put my argument into Steam's launch options - the "play" button seems to try the gamescope cmd and fail before returning back to "play".

Currently running the open kernel 595 nvidia driver from the driver manager. My launch argument is as follows. It was working on Fedora before Fedora completely nuked itself and I decided to try Kubuntu.

gamescope -w 1280 -h 720 -r 144 -o 30 -b --adaptive-sync -- %command%

Appreciate any help!