Comment by heywire

E cores have been the bane of my existence at $dayjob. I received a new laptop a while back with an i7-12800H. I make heavy use of VMware workstation virtual machines under Windows. It kept wanting to put my VMs on the E cores, which meant they crawled and showed 100% CPU usage inside the guest, but the host was mostly idle. Luckily others had run into this issue and shared some configuration settings (powercfg /powerthrottling /disable) to exempt the VMware processes. I lost so much time tracking that down, I almost went back to the old laptop.