SQL Server 2016 huge performance difference between two identical servers with same setup

I have two identical physical servers:

ProLiant DL360 Gen9 (Intel Xeon E5 1620 v2, 2 sockets, 8 cores, 16 logical processors, RAM 256 GB)

Windows Server 2012 R2

SQL Server 2016 (CU8)

And I experience a huge performance difference in som agent jobs (SSIS) where the execution time is 2 to 4 times longer on one of the servers. Here to mention it is the same "code" behind in the SSIS package.

My colleagues and I have tried several things already which did not help. The last couple of days I focused on the network side of things and I have found a difference in the setup. I do not know if it is relevant but I would like to adjust the systems so I know they are "really" identical.

So on the slow machine when checking the ports listning:



Compare to the "good" server and all my test servers.



Anyone have an idea why on the bad system I have TCP 0.0.0.0:1434 listening instead of TCP 127.0.0.1:1434? And TCP [::]:1434 instead of [::1]:1434.
I have not found anywhere where I could change this setting in SQL. Any suggestions? Or is this somewhere in the "Windows" TCP / IP settings I need to change to get this setup the same way.

Thx

Stefan