I know the launch options needed to set a specific resolution for Steam games, (-w #### -h ####), but no values I enter are working. I try to make the resolution 1920 x 1080, and every time I launch the game it’s just in my native resolution of 1280 x 1024. I’ve tried launching the game in both windowed and fullscreen mode, but to no avail. When I go into the Garry’s Mod options and change the aspect ratio to 16:9 - widescreen - and restart the game, it automatically goes back to 4:3.
I would greatly appreciate some insight on how to sort out this dilemma.