Issues with Walls

So I’m having an issue after the newest patch. My walls won’t delete like at all. And it’s hard to change the wall height because I’ll click medium wall height and my game will lag, then freeze, and SOMETIMES actually change it. I can’t build because of this and I worked REALLY hard on this build. What do I do? I do have mods and CC but I’ve removed all broken mods and updated all the ones that needed updated and Better Exceptions isn’t pointing out an issue mod. Idk what to do?