No, the worst app is Windows 11. My parents have some all-in-one HP PC. It has some Intel laptop processor from about 8 years ago, 16GB of ram, (upgraded from 8), and a wheezy 256GB spinning drive, running Win10 adequately.

After being bombarded with “upgrade to Windows 11! It’s easy and fun!!” notifications, they did so, and of course their PC is woefully underpowered for the job.

I log in remotely and check what’s running and the OS is paging to the swap file constantly. [Edit: and I mean, to the point where opening an application takes 60 seconds of disk thrashing for a window to appear]

I had to get a de-bloat script and turn off about 50 Microsoft “essential services”. The biggest hog out of them all was copilot, which was using about 4GB while sitting there idle.

I have no doubt that I’m going to have to run that script every month as everything gets “repaired”, until I can get back to their place and put a SSD in and maybe install some flavour of Linux.