Sims won't load with DirectX 11

When sims first updated to Dx11 it worked fine for me but after a while I started having other issues, so I switched back to Dx9 and it works fine but its SUPER laggy to the point where it's getting hard to play. Also, I don't know if this has anything to do with it but when I try and load my game without any mods it doesn't load at all no matter what version I'm playing on. but it will load with mods enabled?