The PS2 record looks to have about 4-5 second load times while mine are 9-10. I am on PCSX2. How do you get faster load times?

I haven't been able to find any tutorial on how to do it or get out of bounds when doing it. Do you just mash side dash and forward dash at the same time while going up a slope to trigger it? I can sometimes sort of get it to happen but i always end up not getting enough height and falling into the first water pit on the right. Could someone explain how to do it correctly and consistently?

Thanks