https://wccftech.com/intel-400-series-chipsets-z490-i225-v-network-controller-issue-fix-2h-2020/

It looks like Intel's Z490 and various other 400-series chipset based motherboards that feature the Intel I225 2.5Gb Ethernet controller have an underlying issue that may potentially affect networking performance.

According to XFastest (via Videocardz), Intel has reportedly issued an update on its Foxville network controller which would be more commonly referred to as I225-V in the upcoming 400-series boards that are launching this week. The I225-V 'Foxville' is a 2.5Gbe network controller which is designed to standardize 2.5Gbe LAN across the mainstream platform. Intel's network controllers are used on both Intel's own chipset based motherboards and also those that feature AMD's chipsets.