I'm a CAD tech for a land surveying company. We do a lot of things like 3D scanning and hydrographic surveying as well. A lot of the software that we use for hydrographic surveying and 3D scanning is relatively old and cryptic. Still updated to this day but definitely not what some would consider "modern." Some of the software just doesn't work or has huge performance issues in Windows 11 without changing the way Windows works with the software. And the compatibility mode that Windows 11 offers isn't robust enough to get some of them to work so I have to download third party software as a work around. And with every update there's always a new and exciting way it fucks with the something I need to get my job done.

I'm sure there are more, but off the top of my head the new right click menu doesn't even have half the shit I need. So I had to go into the registry to get the old one back because I was tired of clicking the "more options" button every time I needed to run a program as administrator for example. Add onto that the constant notifications for features that our company doesn't use get shoved in my face is constantly annoying. I've had to uninstall so much bloatware just to get it to shut up.

It's not like it's the worst OS I've ever used. It's just all the little things that add up over time that generally makes things more difficult or frustrating. I've had to troubleshoot more issues with using Windows 11 than I can even count and with each update the list only grows.