I have an early 2013 MBP with 256 GB SSD. Total Finder 1.7.12 on OS X 10.9
Total Finder freezes every time (with the spinning beachball) I copy several files from one tab or window to another.
I select files, press cmd+c, and it hangs for a few seconds before finishing copy operation. These can be small text files or images.
Copy and paste in Finder works okay.
Also, with the freshly launched Total Finder copy and paste work great for some time. And then the slowdowns begin.