If you’ve messed up the game beyond recognision, backup then delete “config.cfg” & “autoexec.cfg” from “…\Half-Life 2 Deathmatch\hl2mp\cfg” and everything inside “…\Half-Life 2 Deathmatch\hl2mp\custom”. I recommend you use any modern source-code editor to change your configuration files, such as Visual Studio Code or Notepad++. You do this by either right clicking on the file, and selecting “Open With”, or click and dragging the file into your text editor of choice. Files in here can opened and edited with any text editor. Your game configuration files are located in “…\steamapps\common\Half-Life 2 Deathmatch\hl2mp\cfg”.
Game Optimisations Important Configuration File Information
Important Configuration File Information.