Networks where I run static and dynamic are completely different, I got else following bugs:

When switching to static IP It does not set defined DNS servers
It looks like
SetDNSServerSearchOrder() does not work with
argument DNSServers = Array("147.32.98.2","0.0.0.0")

But with DNSServers = Array("147.32.98.2") it does

Else when go dynamic I needed to add
Item.SetGateways("",Gatewaymetric)
which clears gateway record, and it is recieved then correctly from DHCP server