Moving from 4.7 to 4.8 breaks destructible mesh settings

I have a few destructible meshes that I created in PhysX Labs, and they worked fine with unreal 4, tweaking the damage threshold and whatnot in engine worked great. The actors didn’t all collapse at once but could have pieces chipped away from them. But when I moved the project to 4.8, all of the settings are ignored, no matter what I change, even bumping into or walking over the DMs causes them to fracture. I even tried tweaking the settings and reimporting from PhysX Labs but it didn’t help. It feels like Unreal 4 is completely ignoring any and all settings I set on the DM, whether I do it from PhysX Labs or within the engine itself.