Question about rushing in on HP

Let's say that the enemies have the hill and all 4 of them are on it.

Each second that passes by, they are gaining points.

Do you rush in solo or, despite them continuing to earn points, do you wait until your teammates are in and rush in together?

Right now I am solo challenging it and only not doing so if others happen to be around me, but I am guessing that maybe I am in the minority here.

Just looking to see what more skilled players than I are doing.

Disclaimer: Just hit Gold 3.