Thanks very much! Yes, I’ve read that thread - thanks for sharing it. I’ve found a workaround that is similar - I moved all the files in the CONTENTS folder of my project to a temp location, then I start the Editor, then I move the files back into the CONTENTS folder with the Editor running and it seems to work. Not very practical, since it has to be done each time I start working. I’ve also added the Epic folder to the list that prevents Spotlight scanning, but that doesn’t seem to help. I guess that next thing to try is adding files back in little by little to see if it’s a certain file causing the stall?