I would like to report a bug.
I have about 36,000 shared files, well after the hash of all the files happens to me that every time Fopnu is restarted many of those hashes are forgotten and the hash of the files starts again.
Obviously not all the hashes are forgotten, sometimes 4,000, sometimes 12,000, a figure that is always variable but the client keeps me in continuous hash and takes up my CPU a lot.
My OS is Linux Mint 21.2 xfce.
AMD Ryzen 5 2400G
Realtek RTL8111/8168/8411
Gigabyte product: AB350M-DS3H V2
Kernel: 5.15.0-82-generic

does the hashing happen EVERYTIME you restart Fopnu?
are you sure that those files or folders that are re-hashing have not changed or been moved or renamed while Fopnu was closed?

1) Yes.
2) Yes I'm sure, i have been using Fopnu for some time, shared files are on external supports, they are divided into categories and are not moved.

Maybe the files you share have duplicate content or file names, and the duplicate file identification filtering and filtering function of FOPPU is not as mature as emule, and if the number of shared files is large, it will be compared every time it starts, which is very time-consuming

All my files are the result of a collection built over years of filesharing.
Categories are well organized and there are no duplicate files.
This morning I restarted Fopnu and I have over 12,000 files in hashing.
I just wanted report this issue.
Thx for answers.