@Tigeercat, I agree with the other's suggestion to experiment with lower wattage/power/temp settings... especially since your initial post describes the harshness as "feels more hot." I would also experiment with airflow. Opening up the airflow will dilute the vapor and make it feel cooler.
Some flavor concentrates may use ethyl alcohol as a carrier, and/or solvent. The alcohol can produce a harsh scratchy unpleasant vaping experience. The alcohol is fairly volatile, and will dissipate over time. Just tuck the bottles away for a couple of weeks, and then try them again. This can also allow all the ingredients to homogenize, and become more flavorful.
Or, you can try accelerating the process, by "breathing" the bottle for a few hours. Remove the cap, and drip tip (if it has one), so the bottle top is completely unobstructed. Then leave the bottle somewhere, where it won't get knocked over, and children or pets can't get to it. Depending on how much alcohol is in the e-liquid; it can take as little as a couple of hours, to overnight, to allow the alcohol to evaporate.
This method can be a bit of double-edged sword though; as it also allows other desired volatile aromatic notes to escape. I would recommend test vaping a small amount, every couple of hours, to check for lower harshness, and potential flavor loss. Stop the breathing process, when the e-liquid is suitably smooth, or you begin to notice unwanted loss of flavor.