Windows 10 seems to be degrading rather than getting better. It seems to have reached windows ME levels of stability on most of my devices. Leaving the win7/8 machines looking pretty good. The cool kids are always messing with it, so the stodgy maintenance programmers never get a couple years to fix all the crap they break.

Plus, the non stop UI "quirks" are probably worse than I can remember. The whole OS has turned into the windows file copy dialog. This is what I always hated about linux on the desktop, 1/3 of the crap doesn't work right..

For example, last night I was sitting in bed with my 9Y/O daughter when she pressed the battery saver icon on the tablet, and the estimated time dropped from 9 hours 31 mins to 8 hours 50 mins. To which I responded it seems like pressing the battery saver icon forced it to recompute the estimated time remaining, where before it had been showing a stale value. Pressing it on and off a couple more times we got it to shift up to 10 hours some minutes. Its like they can't smooth the power consumption for longer than a few seconds, and the recompute timeout is longer than the smoothing, so the value has large jumps instead of smoothing changing.

I could go on and on but its pretty obvious that no one is actually testing the UI, they are just letting some random people throw crap into it, and ship it. Worse its like their user metrics come down to, if less than 50% of the installs are using something then its ok to remove it (say classic mode).