Do I have the proper duplicate sorting settings checked?

[evancv]

I have 250,000 photos in many folders and in many subfolders. I have compiled them all into one master folder and would like to sort out all of the duplicates, take all of the duplicates, and place them into another folder. What configuration should I use in the "find files" menu? I currently have size and content (byte-to-byte) checked under dupes and on the right side I only have dupes checked. Is this the proper way to find all of the duplicates? I attempted this once and it appeared that I still had some repeating photos.

Secondly, what configurations should I have checked for a "custom copy" after I find all the duplicates?

[admin]

How many dupes did you find?

[evancv]

How many dupes did you find?

I found 252,036 duplicates in 18,363 groups

[admin]

252,036 dupes in 250,000 photos? In which part of the galaxy do you live?