SMB Speed collapse

Hi.

Since about 2 Weeks I have a problem with my smb shares:

When writing files from my computer (win10) to my smb shares it starts with ~80MB/s, after about 10-15 seconds the speed drops and swings between 3-12 MB/s and remains till the end.

Reading files from the smb-share is constant ~100MB/s.

Any suggestion where to look ?

Found something, but don't know if it could be a reason:

The OMV-server has 5 netword cards: onboard realtec chip an a 4-port intel networkadapter.

The 4 ports are bonded to bond0, ip-adress 192.168.10.1, the realtec port has the ip 192.168.10.2.

the one port is for administration (because in OMV 2 the bonded ports sometimes disappeared and my server wasn't reachable until I did omv-firstaid on the console).

When setup the server with omv 5 I created the bond via webgui. Just about two weeks ago I saw that the bond wasn't shown anymore in the networkadapters, so I created a new bond, but it was shown as bond1.

Today I connected a Monitor to the server and saw some lines "bond0: inavlid new link on slave....", also for bond1.

"ip link show" showed me the 4 intel ports as master for bond0 and bond1, also bond0 and bond1 with the same ip-adress.

I deleted the bond1 via GUI and rebooted the server.

Now something strange: In Networksettings there's only 1 networkadapter (the realtec), "ip link show" shows also the bond0 and all 4 intel ports as master for bond0, but the console on the monitor shows me "to manage the system visit the omv web control panel: bond1: 192.168.10.1".

I think my network config is messed up.

"cat /proc/net/dev" also shows a lot of dropped received packages

OMV-firstaid doesn't show the the bond adapter, just docker0, the 5 ports and 3 virtual ports for the docker container

how can I clean up this ?

Versions are in the tag in in my post above: client win10, server omv 5

There's nothing to find for bond1.

But I made a new thread in network config. I thing the problem belongs to there.

Thx