My 2017 (5'10, 170lb) was throwing consistent game 2.3 early this year during Freshman ball in the spring, and was measured at 2.19 during tryout throw downs.
We took a lot of video and saw it was taking him ~1.0 seconds to get rid of the ball. He spent a lot of time on that and has dropped it to.8 seconds in game and .7 seconds in drills. That lowered his his Pop time to consistently just under 2.2 in games this summer (I think he lost a little velocity but expect it to come back). He even hit 2.00 once and 2.10 in the same game over the summer.
I would look at your release time, as there are likely some pretty quick gains there.