Exporting an FBX from Blender gives me strange artifacts when baking

The image should say it all. For my past 2 projects I’ve been getting lots of issues when using FBX exporting.
I’ve tried a number of different settings when exporting the FBX, I also run into the same issue with OBJ exporting from Blender. I’ve even tried another rig for good mesure. Been baking in both Painter and Marmoset with the same results.