Scenario
Today I set up an smb share on my Linux desktop machine connected to my router via cable 1GBit/s. I tested the LAN speed between my Notebook(Manjaro, 5GHz) and desktop using iperf. Result is around 500Mbit/s in each direction.
Transfer Speeds
Transferring a large file from desktop to said Notebook results in a speed of around 3MB/s = 24Mbit/s. Using a windows machine to transfer the large file from linux desktop to windows machine results in a speed of around 160MBit/s. Now back at the Linux Notebook using sftp I get a speed of 160MBit/s. File manager is dolphin for smb and sftp.
Problem
What is misconfigured on my Linux smbclient, that it can only reach a speed of 24 Mbit/s?