Ironically, the better people become at doing the maps the better it becomes to simply qualify and immediately leave if all you want are the points for dyes, housing items, etc... It's about an average of 8-9 mins including the waiting times to do all 3 maps for an average of 300 (since only 1 out of 8 can win). You can qualify for the first map and dip out of the second map in about 3-4 mins. If you are lucky enough to get the red, yellow, blue map for the 2nd wave and are good at the timing you can get 250 in 3-4 mins and then dip after qualifying.

This is with people taking forever with the 1st map since it takes 16 to qualify. Once everyone becomes better it will reduce the time for both, still making it more consistent for your time to do map 1 & 2 then dip out.