Windows 10 update. They nagged about it, and for security I relented. It did a few things: made our proprietary CAD slow (not just one machine or one company, but every customer running it complaining), made home machine slow for everything. Made my wife’s older laptop a useless brick. The UI was so slow it seemed frozen. So I searched what Linux Distro supported the Proprietary CAD. Which was SUSE and RHEL. Since OpenSUSE was close enough and free I installed it. CAD was back to normal W7 speed, and my wife’s laptop was faster than on W7. Currently I moved her laptop to NiXOS, it is snappy and runs apps & zoom calls as well as my newer Workstation