I have bought a root server from netcup a month ago, put windows server 2019 on it and didn't have any problems in the beginning. This morning a friend contacted me that he couldn't connect to my website and teamspeak / game servers. I have tried installing other network drivers and but none of them work normally, the server does have an internet connection but it is really slow. So slow that it takes about 20/30 seconds to load google.com. Currently i have the virtio (recommended) drivers installed and the max internet usage is around 250 kbps (won't go past this). Looking at the network adapter in windows it is telling me that it has a 100.0 Gbps connection.
I hope somebody knows what the problem could be, if anyone needs to know more information please comment .