DrawFPS
From WolfWiki
The FPS counter in ETPro is been extended from the default setting.
There are now three different settings you can use to show more detailed information about your frames per second.
cg_DrawFPS 2
Draws a more accurate fps meter, it updates every second
cg_DrawFPS 3
Draws the time needed to render a frame in milliseconds
cg_DrawFPS >3
The same as 2 but here you can you specify the time in milliseconds between two updates