Just bought a 2016 optima lx 11k miles 2.4L one owner from New York.. which bothers me because I don’t think it was broken in properly possibly. It idles at about 600-675 rpms when stopped in drive. About 20% of the time when you let off the brake to drive from a stop it drops Rpms about 100-200 down to almost 500 rpms. Luckily I bought the 2 year warranty and have a service scheduled monday but has anyone else have concerns similar ? No recalls with my vin. Thanks for any help much appreciated really wanna take care of this car with such low miles but getting worried.