Steam > Counter-Strike: Global Offensive > Properties > General > Set Launch Options:
-novid -tickrate 128 -language bananagaming

Launch options explained:
-novid = Remove the Valve intro that normally plays at the beginning. A must-have launch option in my opinion.
-tickrate 128 = If you create an offline game with bots, the created server will run at tickrate 128 instead of 64.
-language bananagaming = This launch option is to launch the “Text Color Mod".