Sim in Houdini, render with redshift. Some of the fractures like the main walls are fractured by custom hda which I prefer to use. I think it can get better results and more faster than default fracture tools. I just ignored the debris simulation and the bounce is not so nature, may be it need more test to get better result. Download Project File: https://javenvfx.gumroad.com/l/building-destruction or https://www.artstation.com/a/21821863 or https://payhip.com/b/p58Ls or https://www.javen.cn/houdini-building-destruction.html