Go to /Left 4 Dead 2/left4dead2_dlc1/cfg, if you have the file there, add those commands in them. If you don't have the file at all, create a text file in /Left 4 Dead 2/left4dead2/cfg, name it autoexec.cfg, put the commands in them and save as cfg file, then test the game again. I don't have a file called "autoxec.cfg". 7zRxOf.

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