Very slow internet through pfsense which is in kvm, what should I do?

Question

KVM

Such a situation: I had a machine with a gateway, on board pfsense. The machine is old, and I wanted to virtualize it. In general, now I have xubuntu in it kvm and pfsense in it. But something really began to slow down the Internet, and somehow strange, the pings are instant, but the Internet slows down. Oh yes, there is no Internet at all on the host ...
What should I do?

Answer 1

Gentlemen, I found, maybe someone will come in handy!
It is necessary to go in pfsense along this path System -> Advanced -> Networking (tab) and check the box "Disable hardware checksum offload".
You can also just change the virtio driver to another type realtek and e1000, but I think this is not the most beautiful solution, since the network speed is higher with virtio.
For those who are interested in more on this topic, read https://forum.pfsense.org/index.php?topic=88467.0