I've also set up a usb install with Win10 media creator and removed install.esd and replaced with install.wim from Windows 11 installer also created with media creator. Works a treat for a clean install with Intel 4790K. Core Isolation is off in defender by default and windows update appeared to be working. I had to manually install intel and marvell sata drivers though from gigabyte site (Z97 Gaming 7). Other intel chipset drivers are hidden away in win update / advanced / optional downloads. EDIT: Interestingly on my new Asus Dark hero, even though it says Windows 11 ready on the box, I still have to manually enable SVM in the bios for Virtualisation options to work.