https://sites.google.com/site/mididrumcoverpartner/rfactor2-realheadmotion-plugin
Resumiendo:
Abrir el archivo player.plr de dentro de "Mis documentos/rFactor2/UserData/Player/" y cambiar los siguientes valores:
Cockpit Vibration Mult1="0.00000" // Primary vibration multiplier affects eyepoint position (base magnitude is in VEH or cockpit file)
Cockpit Vibration Freq1="0.00000" // Primary rate of vibration affects eyepoint position (higher framerates allow higher rates)
Cockpit Vibration Mult2="0.00000" // Secondary vibration multiplier affects eyepoint orientation (base magnitude is in VEH or cockpit file)
Cockpit Vibration Freq2="0.00000" // Secondary rate of vibration affects eyepoint orientation
Car Vibration Mult1="0.00000" // Vibration multiplier affects cameras attached directly to the car
Después, copiar el contenido del plugin dentro de la carpeta "rFactor2/Plugins".
Lo acabo de probar, recomendable 100%. Elimina la sensación de flotabilidad del coche.