2.24x is pretty strong good job. You are rounded however and your form could use some work. Just a couple suggestions. Instead of going up to the bar and just yanking as hard as you can - set up and take the slack out of the bar instead of yanking it. This will allow you to maintain a better position and lift more.

Keep your chest up and "hide your armpits" by keeping them down.

Small form fixes in the deadlift go a long way and you should definitely be able to pull 3x +