It probably has the longest rounds of any of the eGo maps. With 5 CP and some back and forth pushes I have played in one game with 12v12 that lasted around 45 minutes.
For many people that might be enough to move on to another map.
Also, it has sudden death (which is great IMHO) and anyone that dies early on gets to watch while everyone else fights. This often encourages people to move on to another server. But I think it is far more fun than "stalemate -- you are all losers".
It just stuns me that back in May/June Foundry was 2000 spots higher in the server rankings than it is now.
This is what I speak of:
08/21/2014 - 12:30:25: Team "Red" current score "5" with "6" players
08/21/2014 - 12:30:25: Team "Blue" current score "5" with "7" players
08/21/2014 - 12:30:27: "toffin2<72><STEAM_0:1:18005397><>" setup "cl_language" (value "english")
08/21/2014 - 12:30:29: "Pacific rim job<44><STEAM_0:0:88872444><Blue>" say "gg"
08/21/2014 - 12:30:33: "Rosen<43><STEAM_0:1:55836092><Blue>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:30:39: "Zytjok<73><STEAM_0:0:14522032><>" requested "playerinfo" (value "67")
08/21/2014 - 12:30:39: "Zytjok<73><STEAM_0:0:14522032><>" entered the game
08/21/2014 - 12:30:40: "(Dead Puppies)The Anime Pirate<24><STEAM_0:1:5970950><Red>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:30:42: "Zytjok<73><STEAM_0:0:14522032><>" setup "cl_language" (value "english")
08/21/2014 - 12:30:43: "Rusty Dust Bunnies<52><STEAM_0:1:32627303><Red>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:30:44: "falconwfo<51><STEAM_0:1:94992077><Blue>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:30:46: "Rainbow Warrior<68><STEAM_0:0:42470691><Red>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:30:54: "Zytjok<73><STEAM_0:0:14522032><Unassigned>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:31:07: "Orange Four-Sided Triangle<57><STEAM_0:0:57207798><Blue>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:31:47: "<+AMF+><59><STEAM_0:1:28443847><Blue>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:32:39: "Pacific rim job<44><STEAM_0:0:88872444><Blue>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:33:17: Team "Red" current score "5" with "3" players
08/21/2014 - 12:33:17: Team "Blue" current score "6" with "3" players
08/21/2014 - 12:33:24: "Pandawaffle does 360's<40><STEAM_0:1:9567200><Blue>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:33:28: "Cordial Citizen Cern<34><STEAM_0:0:43031239><Red>" disconnected (reason "Disconnect by user.")
08/21/2014 - 12:34:11: "toffin2<72><STEAM_0:1:18005397><Red>" disconnected (reason "Disconnect by user.")
Maybe about 10 or 15 minutes ago, it was a full server. Most likely these were steam rolls. Unfortunately with the limit history of RCON, I can't go back to where it was 12 v 12. But it'll be in the logs.
Of course, steam rolls will kill any server if they keep happening, but Foundry seems more prone to them, in my limited experience.