Geforce experience wont open when i press alt+z

[Jdogums]

I went into Geforce experience and gmod didnt show up, but every other game i play did. i went into gmod and tried to open the recording thing ( Gforce exp or shadowplay, whatever its called.) and it didnt open. It opens for every other game. Ive seen people haveing the same prob as me. I have my game on fullscreen.

[harth ✧]

Hey there J-dogums if you take a look at GeForce's list of supported games that they have (https://www.nvidia.com/en-us/geforce/geforce-experience/games/) Garry's Mod is no longer supported, sorry for the inconvenience; just found out about this today.