Take this scenario, where lag drives me nuts: At freeway speed, do mildly hard slow down, as if traffic stopped ahead. Then, without stopping (at maybe 25mp), stomp on the pedal, as if you want to change to an open lane, and need to accelerate fast because traffic is approaching fast on that lane.

In my case, there is this 2-second lag, as if transmission is hunting for a gear. Then, because a low gear is chosen, RPMs shoot to near-max, and acceleration turns out meh.

Even on left-hand turns, I often find myself abandoning the idea to quickly turn when a gap opens, because I know there is this ridiculous lag when stomping on accelerator from complete still. I don't want to get T-boned.

If OP is suggesting that with Sprint Booster, acceleration is instant after pressing on pedal, it is then not the same as simply mashing your foot. In my cases, it does not matter how hard and far the accelerator pedal is pressed. The lag is always there.

So, does sprint booster take care of those 2 scenarios?