I am using Mac OS X Sierra. I'm trying to disable thumbnail loading in Finder for all folders, since every time I open a folder of PDFs it takes about 2 seconds to load, which I find slow. This seems to happen every time even when I open the same folder, so it appears the Thumbnails are not getting cached.
I went into view options, disabled the thumbnail loading, and clicked "use as defaults". However, it didn't actually apply to all folders. When I go into a different folder, I have to make the setting changes I just made again. If I'm not mistaken, this seems to defeat the entire purpose of a "use as defaults" feature, because I'm assuming that's supposed to apply to all folders, so you don't have to painstakingly go to each individual folder and change the settings.
I have the same problem as in this thread by someone else from 2014. The solution in that thread was to make the settings in the top-level folders on the finder sidebar (Documents, Download, etc.) and then clicking "use as defaults", after which the subfolders are supposed to automatically be set. I did this, and the subfolders were not set.
Anyone have a solution?