The default control settings are for some settings completely insane and should be changed to some which can actually be used as normal settings.
Especially the settings for fovspeed default 3.0 and keybspeed default 10.0 are completely unusable.
Fovspeed should be around 0.5 and keyboard speed 0.3-0.8 to be usable on modern computers.
Maybe if you have a 10 year old the default settings make sense.
Hans