I've noticed that the zps server typically has to be kickstarted to get players on. Is there a preferred map that attracts players? or just stock maps in general?
Most effective map would seem to be zpa_badbayou. I used to use zpl_armory2 as it got players too but it became less effective recently. I used to be able to use zps_cinema and a few other maps to populate too but they also don't seem very effective but they're always worth a shot.
Maps like zpo_aquatica, zpo_harvest and zpo_biotec only seem to attract players when the population is over 5-6 people.