The swarms spawn and respawn endlessly for me. I have used destroywilddinos command to kill them and they are ALWAYS the first things to respawn within like 2 seconds. You kill one swarm and 2 more replace it immediately. Only way to clear an area is to teleport away (I got to ocean biome) and teleport back. I get like 5-10 minutes without swarms this way. Needs a fix right now.