It was capture the relic.
We only had 3 people ( thanks group finder), one 4 man group was camp spawing us while the other team got 4 relics in the meantime. The other team basicly went into our base while we fought the camp spawners and was ignored. At 4 relics the campers left but 2 minutes later the second team got their 5 th relic.
Was i that unlucky or was something else behind this?