I may have found a possible cause to the error, the i7-8700k im using for the home server does not support ECC. While the hardware I gave away to family had a cpu with ECC support. This could possibility explain the errors. I wrongly assumed SMB worked correctly as well as the other FTP clients as after more testing they are had a chance of corrupting data.

When i upload large archive files to a home server, the data gets messed up somehow. The md5/sha256 hash does not match the original file on the main computer. More bizarre when downloading the same archive file the checksum is different each time. This occurs from a zerotier vpn and local connection.

I have tried several different 7z and zip compression levels, including just using store. I have tried moving the file uncompressed/unpacked back and forth with similar results. High levels of compression results in 7zip reporting data error, while normal and store report CRC error.

I tried default WinSCP settings, binary transfer mode, turning off optimization of buffer size.

This issue is not occurring on cyberduck, filezilla, or an SMB share on windows.