I "had" to try Win 10, had no plans to after reading everything here and elsewhere.
I have a PC that is only used for AH, has my CH stuff on it (warthog and custom peds on a box for DCS and other stuff) as I feel CH is best for AH in terms of precision. Anyhow, only change I had made in months was installing the beta, and when I used TrackIR, TiR started flipping out, I mean really odd behavior. It would lock up the entire PC slowly, not respond to the camera/trackclip, but the PC worked fine without TiR launched. As soon as it was though, big trouble. Natural Point's system tech remoted in and spent 3 hours trying to figure out what happened, and even after multiple reinstalls/registry cleans/etc (which I had done myself several times already), everyone at TiR HQ was at a loss. I was going to post here about it, but IMO it is probably coincidence this happened just after installing the beta - even though not a single change other than a windows 7 update had been done to this system (I don't fly AH too often, so it sits off mostly). Anyhow, with TiR throwing in the towel, and with no TiR with AH or AH beta, and no system restore possible, I was looking at having to reformat and hope that fixed it, as TiR hardware worked on my other systems here, and the machine is really useless to me without it for AH.
My win 7 discs I realize are 500 miles away at our other place in Calgary. I do however still have that annoying Win 10 upgrade to try, so I figure why not, I'm reformatting anyway, maybe this will keep this machine up till I can get my Win7 dics and codes.
What a giant PITA Win 10 is. Sure, it did fix the problem regarding TiR behaving, and it works fine with all 3 versions of the beta, even after reinstalling both many times just to ensure that, but wow, I almost wish I'd just left it until I'm back home considering the time it took to "secure" Win 10, change all the settings/goofy things, and what not. And I STILL can't get that "Cortana" to get lost from the process list, even with it turned off, uninstalling it doesn't work, and it still comes back if you end it. Annoying. I thought the Vista deal was unpopular, but this one may steal that title.