I am excited about Windows 10, and DX12, but I am really worried about the stability especially pertaining to video games. I adopted 8 very early on and found that I had problems with a few games so I returned to 7. Does it seem that 10 will do a better job of supporting games?
To early to tell really. It took to the games I've installed so far pretty well, with no problems. So far it's just Steam and WoW on this machine. Haven't installed any steam games yet.
Admittedly, I haven't gamed as much on it, but I've otherwise had no issues with games in particular. Only thing I had issues with was Virtualbox.
I have a pretty full Steam library as well as some retro games running on my Windows 10 desktop. I am running the same setup on a Surface Pro 2 as well. The desktop is running everything fine. There are lookup issues with certain retro games, but the steam stuff tends to run perfectly. The best specific answer I can give you is I run Diablo 2 a couple of times a year to remind myself how awesome it is. It is way more stable than 8 or 8.1. There are still issues between my graphics card (Radeon R9) and the last few builds, though this mornings updates finally didn't require a work around. Fun times!