A friend started making a surf map, however he could do it fine being the host, guests don’t accelerate and maintain velocity the same. I took his same ramp into my own condo, I can suddenly feel the difference and he can’t surf at all.
I made a video to demonstrate, the first part in Highrise, I am the host and surfing works fine, and ET is sliding off. The second part I am in his condo and you can see I just lose speed and slide off.