In my experince with my four finger thumb release, the opposite was the case. I feel like it has more than improved my shooting! Where I would get extreme trigger panic with the index finger release style, I am able to curb the panic with the thumb style and the my accuracy has been obvious.

I don't think that there is even MINUTE timing difference, and if so not near enough to cause you to float much IMO. If you are floating too much, youmight need towork on your breathing control. Good luck!