Yeap, I did try all the different airflow sizes and all sorts of wattage. Was convinced that it's not the nicotine level because I've been vaping 6mg on all the local juices. Interestingly enough though, I got myself a 3mg Milkman and it's really nice and smooth. Now I'm wondering whether 6mg on local brands and US brands are a whole lot different, which is really odd.You're vaping at 19watts? Bump it down to 17. I vape at 21-23 watts on my subtank, when I left my wife try it I close the airflow down one, and bump the wattage down. I do this so she doesn't get a harsh throat hit since she doesn't vape much. Also you may want to try 3mg nicotine. It could be the PG, but I think in a subtank it's more the nicotine
Also got told that I should try warm steeping the Suicide Bunny. Leave it in hot water and until the water cools down to room temperature and repeat 4 times, with the lid left open. Apparently this would help evaporate any harsh chemicals and could make the juice a lot smoother. I hope that works because I really don't want to give up on the Suicide Bunny.