[iperf3 speed] Same Node vs 2 Nodes (Found a Bug)

I just stumbled over something very weird with LXC Containers, but i bet it happens with VM's either:

i have 2 Identical Nodes in a Cluster:
- both are connected over 2x25G in LACP (NIC: Intel E810)
- CPU: Genoa 9374F
- RAM: 12x64GB (All Channels 1DPC) 768GB
- Storage: ZFS Raid10 (8x Micron 7450 Max)

So those nodes are everything, but not slow in any regard. PVE is working great, its actually the first issue i have.
I have more as 10 PVE Servers and im around here since forever possibly...

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