Weird pixelly lighting in scene?

Hi, I’ve tried looking everywhere for this answer, but I can’t find anything on it. Not sure if I’m wording it correctly.

Anyway, I’m getting these weird pixelly lights a long the bottom of where my static meshes meet in the scene (this is in the editor). They flicker when I move the camera, and also show up very prominently when I take high res screenshots.

It wasn’t doing this before, and then all of a sudden it started doing this, and I have no idea what caused it. Lightmap resolutions are 512, setting is on Epic, and lights have been baked. Can anyone help me? I’ve tried all I could think of! Thank you.