I use mouse and keyboard, but not the internal way. I'm still using PPJoy and GlovePIE to emulate a wheel and pedals. No input lag, able to have much finer control over pedal actions. No problem in that regard. If anything, weight transfer in LFS feels more sluggish, on road tyres anyway. Assetto Corsa is a bit strange in that some tracks cause constant micro-oscillation everywhere on track, and some don't. I don't get the impression it's to do with tyre physics.