NFS works way better than SMB, but the Finder is not without its troubles. Sometimes it will take 10 minutes to display a folder for reasons, mostly.

The Finder is really an horrible piece of sh*t of software, slow as hell, doesn't provide the most basic information[1], and, of course, doesn't work properly when browsing network shares either SMB or NFS.

[1]virtually all common file browsers (Windows Explorer, Gnome Nautilus, KDE dolphin) displays at all times : the number of files in the current folder, their size, the number of files selected, their size; also all but the Finder have a "recent files" section that actually contains the latest files used, while the Finder displays a completely random selection of recent files, but never the most recently used ones.

With the exception of summed size of selected items, the Finder has all of that. Help yourself to the "View->Show Status Bar" menu option. Also, "View->Show View Options->Calculate All Sizes" to show storage size for directories.