Isn't Sweet Home 3D too slow at launch?
Just tested--it's under 4 seconds, even with all that luggage. I'm hoping that speed will also be apparent when rendering images.The 14K files came as a surprise to me, as well; I knew I had a lot, but not THAT many. I'm currently archiving everything, one by one.
To view AppData folder, you could also have tried these instructions.
Well, either I'm still getting used to Windows 10, or I prefer creative, out-of-the-box solutions, or I'm an idiot who frequently does things the hard way. Choose whichever explanation you prefer. 
