On My island after reset there are that many slimes that I cant even work on anything after I kill them they spawn straight back in I have changed the biome to Mesa still no difference please make changes. ~Ashey_Gamer
I think there's a slime chunk, i mean you can make an instant slime farm right there and make bank. Well I think you can build a little bit away from that chunk and you'll be good.
That's lucky, not all chunks are slime chunks. A small portion is. If I were you I would build in a different chunk, it will be okay.
Place bottom half slabs and nothing can spawn. Light prevents all other overworld mobs but not slimes. Build above Y=40 and no slimes will spawn.