Asus GTX 780 DC2-OC2 (shouldn't matter, but for the sake of completeness).Asus Prime X570 Pro motherboard (Intel I211 Gigabit network.
When I disable and enable the NIC in the Network adapter configuration screen, the issue is gone for an unkown amount of time.Īll the Energy Saving things are disabled. The NetIO server is a VMWare ESXi VM that runs at 100% CPU load all the time and without any issues can download/upload 1Gbps. I noticed that when the CPU is at a constant load, the NetIO-GUI speeds are all over the place, when I stop that constant load, the speeds are close to 1Gbps. All the cables are Cat-5E and the connection is forced to 1Gbps Full duplex, since there were some auto-negotiaton issues with UniFi switches. I recently switched Ethernet wall socket connection, both are in the same tube, which run down to the patch panel and into the UniFi Switch 24. I tweaked some of my NIC's settings from within Intel's PROSet Adapter Config Utility, which also passes all the NIC problem check tests, when the issue is 'active'. Usually, the NetIO-GUI, which tests network speeds to a local networked machine, RX/TX speeds are close to 1Gbps, but during a download speed drop, the RX speeds are around 500Mbps. (expecting 250/25, so the upload is fine)
A few months ago I started noticing internet speed drops, to a point that the internet is almost unusable (sometimes around 10Mbps or 5Mbps, very rarely it drops to 120Mbps).
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