Shockwave wasn't a fast loader either the problem is when this was installed the park was quieter also. With a height restriction of 1.2m opens up for more people to ride they desperately need to improve ops and get a 2nd train for the Wave
Shockwave loaded way faster than this train though. We used to get dispatches out every two and half minutes on Shockwave, sometimes 3 and a half, which is slow in itself, but I am yet to see The Wave dispatch a train quicker than 5 minutes, which is ridiculous for a headline attraction.
Shockwaves loading was rapid compared to the Wave, plus there is only a single train, even though they would stack, horribly, they could be loading next batch of guests while the current train completes the circuit.