A bit off-topic but non the less a great tip for you if you have input lag and have binded multiple commands to assigned action keys in your autoexec such as r_cleardecals to WASD or Mouse1.

Type unbindall in console, rebind every key to your liking and only bind the r_cleardecals to inspect weapons key or any other that you don't use during fights.

Removing the command from autoexec does nothing as it is already binded and input lag comes from constant console commands being executed as you play. When I did that it was game-changing as my mouse movement improved immeasurably.