What is the effect of cooking oil quality to the cooking time and how it happen?

Poor quality cooking oil will required longer time in frying nuts?What is the effect of cooking oil quality to the cooking time and how it happen?
I don't think it will affect the time at all, but it could have an off flavor. That said, I buy the Walmart brand cooking oil all the time (usually the corn oil or 100% canola oil), and as long as it's relatively fresh, it tastes just fine.What is the effect of cooking oil quality to the cooking time and how it happen?
it may not take longer but the oil will burn faster.