I am using Windows Server 2012 R2 Hyper-V server and have Linux proxy server working on the virtual machine. When it gets high load Hyper-V start to drop connections while network adapter is up. The problem is similar to https://support.microsoft.com/en-us/kb/2263829 but we have 2012 R2. Moving the virtual machine to the KVM hypervisor solves the problem but we want to use Hyper-V server. Same Hypervisor is running several other VMs running Linux OS machines with lower network activity and they perform well.

Hi, please repost in the Hyper-V forum here: https://social.technet.microsoft.com/Forums/en-US/winserverhyperv/threads

This forum is for the product Virtual Server 2005.

Oh. Sorry. My bad. Will create a new topic in the forum you stated.