[SOLVED] Windows VM network speed is slower than Ubuntu VM

[iamanewuser]

I use iperf3 to test the network speed, run iperf3 server on PVE host, and run iperf3 client on VM.

iperf3 result on Ubuntu VM:



iperf3 result on Windows 10 VM:



Ubuntu VM config:


Windows VM config:


Why windows network speed is 10 - 20 times slower than ubuntu ?

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I found the reason, the antivirus software caused the slowdown of the network speed.