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I use Teracopy and when I install, have it replace the built in Copy and Move commands. Fatster and give more info.
The beauty of RichCopy for handling lots of files/folders is that it is multi-threaded. Instead of counting files it starts copying from the jump.
Explorer has its quirks. So much software expects them that they will never really fix it. It's been around in 32 bit form since Win95? Two decades and still no fix. It's unrealistic to expect 'em to fix it now.