Well, if I'm publishing directly to my Facebook albums, my Quality is currently set to 80, my max width to 1900 pixels, and my max height is a bit over 1000 pixels.
I also use the Hard Drive Publish approach. My settings are a bit different, simply because I've done some experimenting with the two approaches. I do need to use the Hard Drive approach when I'm uploading to a FB group rather than my personal albums.
I do tend to upload "large" images, that is, larger than the POTN max of 1024 pixels at the longest dimension, because I like to post pics that can benefit from viewing in the Full Screen viewing mode, it can make a big difference with a lot of images, especially ones taken in the "landscape" orientation.