[louis1016]

The rule unfortunately doesnt give any penalties with the rule on. It only gives bonuses to halfings, rogues, and warriors.

            if(RuleB(Character,UseRaceClassExpBonuses))
	{
		if(GetBaseRace() == HALFLING){
			aatotalmod *= 1.05;
		}

		if(GetClass() == ROGUE || GetClass() == WARRIOR){
			aatotalmod *= 1.05;
		}

I guess it wouldnt be too hard to modify this for real exp penalties though