I have a few servers on my network that are experiencing high CPU usage. It's nothing specific but everything seems to be running hotter. Task Manager is running at up to 6 or 7% instead of below 1. Same with RPC and a few other normal idle processes. These machines are idling at around 10-15% CPU usage while others without the issue are idling at 0-3%. It's already very odd that only some machines are having this issue, they are all configured the same and on the same domain following the same GPOs. There is nothing unique about them either, they are all development VMs but some dev VMs are fine. It becomes a huge problem whenever any intensive application is started such as Visual Studio, these machines shoot to 100% usage and become unusable. A normal dev VM runs VS with CPU at around 30-40%.
So I've been playing around with this for a few weeks and I found a band aid. If I change the machine name and the static IP, reboot, then change it back, it runs great. But only for a day. The next morning everything is back the way it was unless I do this again but obviously this isn't a viable long term fix. Any idea what on the system could be causing slow performance across the board but is magically fixed by cycling the machine name and IP? I'm baffled.