SFTP Speeds After 6.6.0 Udpate

[BioHazardous]

My SFTP connection speeds over a local network are terrible now. I used to get around 55MB/s and now I get around 100KB/s and constantly getting host is not communicating for more than 15 seconds errors from WinSCP.

 

Is there some setting I need to go find and change? Forgive me, I'm not a Linux expert by any stretch of the imagination. 

 

This is all I see in the logs:
Sep 25 09:26:28 Tower sshd[20211]: SSH: Server;LType: Throughput;Remote: 192.168.3.3-60509;IN: 0;OUT: 6304;Duration: 75.8;tPut_in: 0.0;tPut_out: 83.2
Sep 25 09:26:34 Tower sshd[20888]: SSH: Server;Ltype: Version;Remote: 192.168.3.3-60534;Protocol: 2.0;Client: WinSCP_release_5.13.2
Sep 25 09:26:34 Tower sshd[20888]: SSH: Server;Ltype: Kex;Remote: 192.168.3.3-60534;Enc: aes256-ctr;MAC: hmac-sha2-256;Comp: none [preauth]
Sep 25 09:26:34 Tower sshd[20888]: SSH: Server;Ltype: Authname;Remote: 192.168.3.3-60534;Name: root [preauth]
Sep 25 09:26:34 Tower sshd[20888]: Accepted password for root from 192.168.3.3 port 60534 ssh2
Sep 25 09:26:34 Tower sshd[20888]: SSH: Server;Ltype: Kex;Remote: 192.168.3.3-60534;Enc: aes256-ctr;MAC: hmac-sha2-256;Comp: none

Edited September 25, 2018 by BioHazardous

[Jerky_san]

on the connect prompt click advanced, connections, and deselect optimize connection buffer size. It made mine work but don't know why it's messed.

[BioHazardous]

Thanks!  That helped. I'll have to do a real test later when I transfer a movie file over that I rip later today. I was only copying small files off of the server for a backup of my thumb drive, so obviously it won't ramp up to full speed with those small of files.